823 lines
22 KiB
Perl
823 lines
22 KiB
Perl
# --
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# Copyright (C) 2001-2019 OTRS AG, https://otrs.com/
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# --
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# This software comes with ABSOLUTELY NO WARRANTY. For details, see
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# the enclosed file COPYING for license information (GPL). If you
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# did not receive this file, see https://www.gnu.org/licenses/gpl-3.0.txt.
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# --
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package Kernel::System::ITSMChange::ITSMCondition::Expression;
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use strict;
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use warnings;
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our $ObjectManagerDisabled = 1;
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=head1 NAME
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Kernel::System::ITSMChange::ITSMCondition::Expression - condition expression lib
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=head1 PUBLIC INTERFACE
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=head2 ExpressionAdd()
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Add a new condition expression.
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my $ExpressionID = $ConditionObject->ExpressionAdd(
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ConditionID => 123,
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ObjectID => 234,
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AttributeID => 345,
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OperatorID => 456,
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Selector => 1234,
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CompareValue => 'rejected',
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UserID => 1,
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);
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=cut
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sub ExpressionAdd {
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my ( $Self, %Param ) = @_;
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# check needed stuff
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for my $Argument (qw(ConditionID ObjectID AttributeID OperatorID Selector UserID)) {
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if ( !$Param{$Argument} ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "Need $Argument!",
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);
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return;
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}
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}
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# handle 'CompareValue' in a special way
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if ( !exists $Param{CompareValue} || !defined $Param{CompareValue} ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => 'Need CompareValue!',
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);
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return;
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}
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# get condition for event handler
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my $Condition = $Self->ConditionGet(
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ConditionID => $Param{ConditionID},
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UserID => $Param{UserID},
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);
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# check condition
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return if !$Condition;
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# trigger ExpressionAddPre-Event
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$Self->EventHandler(
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Event => 'ExpressionAddPre',
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Data => {
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%Param,
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ChangeID => $Condition->{ChangeID},
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},
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UserID => $Param{UserID},
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);
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# add new expression name to database
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return if !$Kernel::OM->Get('Kernel::System::DB')->Do(
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SQL => 'INSERT INTO condition_expression '
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. '(condition_id, object_id, attribute_id, '
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. 'operator_id, selector, compare_value) '
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. 'VALUES (?, ?, ?, ?, ?, ?)',
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Bind => [
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\$Param{ConditionID}, \$Param{ObjectID}, \$Param{AttributeID},
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\$Param{OperatorID}, \$Param{Selector}, \$Param{CompareValue},
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],
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);
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# prepare SQL statement
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my $ExpressionID;
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# this is important for oracle for which an empty string and NULL is the same!
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if ( $Self->{DBType} eq 'oracle' && $Param{CompareValue} eq '' ) {
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return if !$Kernel::OM->Get('Kernel::System::DB')->Prepare(
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SQL => 'SELECT id FROM condition_expression '
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. 'WHERE condition_id = ? AND object_id = ? AND attribute_id = ? '
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. 'AND operator_id = ? AND selector = ? AND compare_value IS NULL',
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Bind => [
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\$Param{ConditionID}, \$Param{ObjectID}, \$Param{AttributeID},
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\$Param{OperatorID}, \$Param{Selector},
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],
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Limit => 1,
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);
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}
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# for all other databases AND for oracle IF the compare value is NOT an empty string
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else {
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return if !$Kernel::OM->Get('Kernel::System::DB')->Prepare(
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SQL => 'SELECT id FROM condition_expression '
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. 'WHERE condition_id = ? AND object_id = ? AND attribute_id = ? '
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. 'AND operator_id = ? AND selector = ? AND compare_value = ?',
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Bind => [
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\$Param{ConditionID}, \$Param{ObjectID}, \$Param{AttributeID},
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\$Param{OperatorID}, \$Param{Selector}, \$Param{CompareValue},
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],
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Limit => 1,
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);
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}
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# get id of created expression
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while ( my @Row = $Kernel::OM->Get('Kernel::System::DB')->FetchrowArray() ) {
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$ExpressionID = $Row[0];
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}
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# check if expression could be added
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if ( !$ExpressionID ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "ExpressionAdd() failed!",
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);
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return;
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}
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# delete cache
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$Kernel::OM->Get('Kernel::System::Cache')->Delete(
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Type => $Self->{CacheType},
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Key => 'ExpressionList::ConditionID::' . $Param{ConditionID},
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);
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# trigger ExpressionAddPost-Event
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$Self->EventHandler(
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Event => 'ExpressionAddPost',
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Data => {
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%Param,
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ChangeID => $Condition->{ChangeID},
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ExpressionID => $ExpressionID,
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},
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UserID => $Param{UserID},
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);
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return $ExpressionID;
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}
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=head2 ExpressionUpdate()
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Update a condition expression.
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my $Success = $ConditionObject->ExpressionUpdate(
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ExpressionID => 1234,
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ObjectID => 234, # (optional)
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AttributeID => 345, # (optional)
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OperatorID => 456, # (optional)
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Selector => 1234, # (optional)
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CompareValue => 'rejected', # (optional)
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UserID => 1,
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);
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=cut
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sub ExpressionUpdate {
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my ( $Self, %Param ) = @_;
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# check needed stuff
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for my $Argument (qw(ExpressionID UserID)) {
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if ( !$Param{$Argument} ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "Need $Argument!",
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);
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return;
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}
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}
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# get expression
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my $Expression = $Self->ExpressionGet(
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ExpressionID => $Param{ExpressionID},
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UserID => $Param{UserID},
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);
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# check expression
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return if !$Expression;
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# get condition for event handler
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my $Condition = $Self->ConditionGet(
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ConditionID => $Expression->{ConditionID},
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UserID => $Param{UserID},
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);
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# check condition
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return if !$Condition;
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# trigger ExpressionUpdatePre-Event
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$Self->EventHandler(
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Event => 'ExpressionUpdatePre',
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Data => {
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%Param,
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ChangeID => $Condition->{ChangeID},
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},
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UserID => $Param{UserID},
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);
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# map update attributes to column names
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my %Attribute = (
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ObjectID => 'object_id',
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AttributeID => 'attribute_id',
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OperatorID => 'operator_id',
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Selector => 'selector',
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CompareValue => 'compare_value',
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);
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# build SQL to update expression
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my $SQL = 'UPDATE condition_expression SET ';
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my @Bind;
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ATTRIBUTE:
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for my $Attribute ( sort keys %Attribute ) {
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# preserve the old value, when the column isn't in function parameters
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next ATTRIBUTE if !exists $Param{$Attribute};
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next ATTRIBUTE if !defined $Param{$Attribute};
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# param checking has already been done, so this is safe
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$SQL .= "$Attribute{$Attribute} = ?, ";
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push @Bind, \$Param{$Attribute};
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}
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# set condition ID to allow trailing comma of previous loop
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$SQL .= ' condition_id = condition_id ';
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# set matching of SQL statement
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$SQL .= 'WHERE id = ?';
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push @Bind, \$Param{ExpressionID};
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# update expression
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return if !$Kernel::OM->Get('Kernel::System::DB')->Do(
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SQL => $SQL,
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Bind => \@Bind,
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);
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# delete cache
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for my $Key (
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'ExpressionList::ConditionID::' . $Expression->{ConditionID},
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'ExpressionGet::' . $Param{ExpressionID},
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)
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{
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$Kernel::OM->Get('Kernel::System::Cache')->Delete(
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Type => $Self->{CacheType},
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Key => $Key,
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);
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}
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# trigger ExpressionUpdatePost-Event
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$Self->EventHandler(
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Event => 'ExpressionUpdatePost',
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Data => {
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%Param,
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ChangeID => $Condition->{ChangeID},
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OldExpressionData => $Expression,
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},
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UserID => $Param{UserID},
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);
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return 1;
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}
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=head2 ExpressionGet()
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Get a condition expression for a given expression id.
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Returns a hash reference of the expression data.
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my $ConditionExpressionRef = $ConditionObject->ExpressionGet(
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ExpressionID => 1234,
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UserID => 1,
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);
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The returned hash reference contains following elements:
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$ConditionExpression{ExpressionID}
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$ConditionExpression{ConditionID}
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$ConditionExpression{ObjectID}
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$ConditionExpression{AttributeID}
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$ConditionExpression{OperatorID}
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$ConditionExpression{Selector}
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$ConditionExpression{CompareValue}
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=cut
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sub ExpressionGet {
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my ( $Self, %Param ) = @_;
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# check needed stuff
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for my $Argument (qw(ExpressionID UserID)) {
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if ( !$Param{$Argument} ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "Need $Argument!",
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);
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return;
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}
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}
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# check cache
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my $CacheKey = 'ExpressionGet::' . $Param{ExpressionID};
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my $Cache = $Kernel::OM->Get('Kernel::System::Cache')->Get(
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Type => $Self->{CacheType},
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Key => $CacheKey,
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);
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return $Cache if $Cache;
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# prepare SQL statement
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return if !$Kernel::OM->Get('Kernel::System::DB')->Prepare(
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SQL => 'SELECT id, condition_id, object_id, attribute_id, '
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. 'operator_id, selector, compare_value '
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. 'FROM condition_expression WHERE id = ?',
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Bind => [ \$Param{ExpressionID} ],
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Limit => 1,
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);
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# fetch the result
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my %ExpressionData;
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while ( my @Row = $Kernel::OM->Get('Kernel::System::DB')->FetchrowArray() ) {
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$ExpressionData{ExpressionID} = $Row[0];
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$ExpressionData{ConditionID} = $Row[1];
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$ExpressionData{ObjectID} = $Row[2];
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$ExpressionData{AttributeID} = $Row[3];
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$ExpressionData{OperatorID} = $Row[4];
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$ExpressionData{Selector} = $Row[5];
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# this is important for oracle for which an empty string and NULL is the same!
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$ExpressionData{CompareValue} = $Row[6] // '';
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}
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# check error
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if ( !%ExpressionData ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "ExpressionID $Param{ExpressionID} does not exist!",
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);
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return;
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}
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# set cache
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$Kernel::OM->Get('Kernel::System::Cache')->Set(
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Type => $Self->{CacheType},
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Key => $CacheKey,
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Value => \%ExpressionData,
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TTL => $Self->{CacheTTL},
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);
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return \%ExpressionData;
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}
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=head2 ExpressionList()
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Returns a list of all condition expression ids for
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a given ConditionID as array reference.
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my $ConditionExpressionIDsRef = $ConditionObject->ExpressionList(
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ConditionID => 1234,
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UserID => 1,
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);
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=cut
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sub ExpressionList {
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my ( $Self, %Param ) = @_;
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# check needed stuff
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for my $Argument (qw(ConditionID UserID)) {
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if ( !$Param{$Argument} ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "Need $Argument!",
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);
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return;
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}
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}
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# check cache
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my $CacheKey = 'ExpressionList::ConditionID::' . $Param{ConditionID};
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my $Cache = $Kernel::OM->Get('Kernel::System::Cache')->Get(
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Type => $Self->{CacheType},
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Key => $CacheKey,
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);
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return $Cache if $Cache;
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# prepare SQL statement
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return if !$Kernel::OM->Get('Kernel::System::DB')->Prepare(
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SQL => 'SELECT id FROM condition_expression '
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. 'WHERE condition_id = ?',
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Bind => [ \$Param{ConditionID} ],
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);
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# fetch the result
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my @ExpressionList;
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while ( my @Row = $Kernel::OM->Get('Kernel::System::DB')->FetchrowArray() ) {
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push @ExpressionList, $Row[0];
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}
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# set cache
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$Kernel::OM->Get('Kernel::System::Cache')->Set(
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Type => $Self->{CacheType},
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Key => $CacheKey,
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Value => \@ExpressionList,
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TTL => $Self->{CacheTTL},
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);
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return \@ExpressionList;
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}
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=head2 ExpressionDelete()
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Deletes a condition expression.
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my $Success = $ConditionObject->ExpressionDelete(
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ExpressionID => 123,
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UserID => 1,
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);
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=cut
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sub ExpressionDelete {
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my ( $Self, %Param ) = @_;
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# check needed stuff
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for my $Argument (qw(ExpressionID UserID)) {
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if ( !$Param{$Argument} ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "Need $Argument!",
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);
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return;
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}
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}
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# get expression
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my $Expression = $Self->ExpressionGet(
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ExpressionID => $Param{ExpressionID},
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UserID => $Param{UserID},
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);
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# check expression
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return if !$Expression;
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# get condition for event handler
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my $Condition = $Self->ConditionGet(
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ConditionID => $Expression->{ConditionID},
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UserID => $Param{UserID},
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);
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# check condition
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return if !$Condition;
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# trigger ExpressionDeletePre-Event
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$Self->EventHandler(
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Event => 'ExpressionDeletePre',
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Data => {
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%Param,
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ChangeID => $Condition->{ChangeID},
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},
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UserID => $Param{UserID},
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);
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# delete condition expression from database
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return if !$Kernel::OM->Get('Kernel::System::DB')->Do(
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SQL => 'DELETE FROM condition_expression '
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. 'WHERE id = ?',
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Bind => [ \$Param{ExpressionID} ],
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);
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# delete cache
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for my $Key (
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'ExpressionList::ConditionID::' . $Expression->{ConditionID},
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'ExpressionGet::' . $Param{ExpressionID},
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)
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{
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$Kernel::OM->Get('Kernel::System::Cache')->Delete(
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Type => $Self->{CacheType},
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Key => $Key,
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);
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}
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# trigger ExpressionDeletePost-Event
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$Self->EventHandler(
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Event => 'ExpressionDeletePost',
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Data => {
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%Param,
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ChangeID => $Condition->{ChangeID},
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},
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UserID => $Param{UserID},
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);
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return 1;
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}
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=head2 ExpressionDeleteAll()
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Deletes all condition expressions for a given condition id.
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my $Success = $ConditionObject->ExpressionDeleteAll(
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ConditionID => 123,
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UserID => 1,
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);
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=cut
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sub ExpressionDeleteAll {
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my ( $Self, %Param ) = @_;
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# check needed stuff
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for my $Argument (qw(ConditionID UserID)) {
|
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if ( !$Param{$Argument} ) {
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$Kernel::OM->Get('Kernel::System::Log')->Log(
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Priority => 'error',
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Message => "Need $Argument!",
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);
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return;
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}
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}
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# get condition for event handler
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my $Condition = $Self->ConditionGet(
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ConditionID => $Param{ConditionID},
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UserID => $Param{UserID},
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);
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# check condition
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return if !$Condition;
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# get all expressions for the given condition id
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my $ExpressionIDsRef = $Self->ExpressionList(
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ConditionID => $Param{ConditionID},
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UserID => $Param{UserID},
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);
|
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# trigger ExpressionDeleteAllPre-Event
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$Self->EventHandler(
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Event => 'ExpressionDeleteAllPre',
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Data => {
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%Param,
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ChangeID => $Condition->{ChangeID},
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ConditionID => $Param{ConditionID},
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},
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UserID => $Param{UserID},
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);
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# delete condition expressions from database
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return if !$Kernel::OM->Get('Kernel::System::DB')->Do(
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SQL => 'DELETE FROM condition_expression '
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. 'WHERE condition_id = ?',
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Bind => [ \$Param{ConditionID} ],
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);
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# delete cache
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$Kernel::OM->Get('Kernel::System::Cache')->Delete(
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Type => $Self->{CacheType},
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Key => 'ExpressionList::ConditionID::' . $Param{ConditionID},
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);
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# delete cache
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if ( $ExpressionIDsRef && @{$ExpressionIDsRef} ) {
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for my $ExpressionID ( @{$ExpressionIDsRef} ) {
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$Kernel::OM->Get('Kernel::System::Cache')->Delete(
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Type => $Self->{CacheType},
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Key => 'ExpressionGet::' . $ExpressionID,
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);
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}
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}
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|
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# trigger ExpressionDeleteAllPost-Event
|
|
$Self->EventHandler(
|
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Event => 'ExpressionDeleteAllPost',
|
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Data => {
|
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%Param,
|
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ChangeID => $Condition->{ChangeID},
|
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ConditionID => $Param{ConditionID},
|
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},
|
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UserID => $Param{UserID},
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);
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return 1;
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}
|
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|
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=head2 ExpressionMatch()
|
|
|
|
Returns the boolean value of an expression.
|
|
|
|
my $Match = $ConditionObject->ExpressionMatch(
|
|
ExpressionID => 123,
|
|
AttributesChanged => { ITSMChange => [ ChangeTitle, ChangeDescription ] }, # (optional)
|
|
UserID => 1,
|
|
);
|
|
|
|
=cut
|
|
|
|
sub ExpressionMatch {
|
|
my ( $Self, %Param ) = @_;
|
|
|
|
# check needed stuff
|
|
for my $Argument (qw(ExpressionID UserID)) {
|
|
if ( !$Param{$Argument} ) {
|
|
$Kernel::OM->Get('Kernel::System::Log')->Log(
|
|
Priority => 'error',
|
|
Message => "Need $Argument!",
|
|
);
|
|
return;
|
|
}
|
|
}
|
|
|
|
# get expression content
|
|
my $Expression = $Self->ExpressionGet(
|
|
ExpressionID => $Param{ExpressionID},
|
|
UserID => $Param{UserID},
|
|
);
|
|
|
|
# check expression content
|
|
return if !$Expression;
|
|
|
|
# get expression attributes
|
|
my $ExpressionData = $Self->_ExpressionMatchInit(
|
|
Expression => $Expression,
|
|
UserID => $Param{UserID},
|
|
);
|
|
|
|
# check expression attributes
|
|
return if !$ExpressionData;
|
|
|
|
# get changed attributes
|
|
my $AttributesChangedType;
|
|
my @AttributesChanged;
|
|
if ( exists $Param{AttributesChanged} && defined $Param{AttributesChanged} ) {
|
|
|
|
# changed attributes
|
|
my %AttributeChanged;
|
|
|
|
# check for reference type
|
|
if ( ref $Param{AttributesChanged} eq 'HASH' ) {
|
|
%AttributeChanged = %{ $Param{AttributesChanged} };
|
|
|
|
# get attribute type
|
|
$AttributesChangedType = ( keys %AttributeChanged )[0];
|
|
}
|
|
|
|
# check for reference type
|
|
if ( $AttributesChangedType && ref $AttributeChanged{$AttributesChangedType} eq 'ARRAY' ) {
|
|
|
|
# get list of changed attributes
|
|
@AttributesChanged = @{ $AttributeChanged{$AttributesChangedType} };
|
|
}
|
|
}
|
|
|
|
# get object name
|
|
my $ObjectName = $ExpressionData->{Object}->{Name};
|
|
|
|
# check for changed attributes types
|
|
if ( $AttributesChangedType && $AttributesChangedType ne $ObjectName ) {
|
|
|
|
# this expression does not match requested type
|
|
return;
|
|
}
|
|
|
|
# get attribute type
|
|
my $AttributeType = $ExpressionData->{Attribute}->{Name};
|
|
|
|
# check for changed attributes and available attributes of expression
|
|
if ( $AttributeType && @AttributesChanged ) {
|
|
|
|
# check for our attribute in changed attribute list
|
|
my @AttributeFound = grep { $_ eq $AttributeType } @AttributesChanged;
|
|
|
|
# this expression does not have the requested attribute
|
|
return if !@AttributeFound;
|
|
}
|
|
|
|
# get object data
|
|
my $ExpressionObjectData = $Self->ObjectDataGet(
|
|
ConditionID => $Expression->{ConditionID},
|
|
ObjectName => $ObjectName,
|
|
Selector => $Expression->{Selector},
|
|
UserID => $Param{UserID},
|
|
);
|
|
|
|
# check for expression object data
|
|
# no need to execute operator if it is an empty array ref
|
|
if (
|
|
!$ExpressionObjectData
|
|
|| ref $ExpressionObjectData ne 'ARRAY'
|
|
|| ref $ExpressionObjectData eq 'ARRAY' && !@{$ExpressionObjectData}
|
|
)
|
|
{
|
|
return;
|
|
}
|
|
|
|
# check attribute type
|
|
if ( !$AttributeType ) {
|
|
$Kernel::OM->Get('Kernel::System::Log')->Log(
|
|
Priority => 'error',
|
|
Message => "No attribute $ObjectName ($Expression->{Selector}) found!",
|
|
);
|
|
return;
|
|
}
|
|
|
|
# check for object attribute
|
|
for my $ExpressionObject ( @{$ExpressionObjectData} ) {
|
|
if ( !exists $ExpressionObject->{$AttributeType} ) {
|
|
$Kernel::OM->Get('Kernel::System::Log')->Log(
|
|
Priority => 'error',
|
|
Message => "No object attribute for $ObjectName ($AttributeType) found!",
|
|
);
|
|
return;
|
|
}
|
|
}
|
|
|
|
# return result of the expressions execution
|
|
my $Result = $Self->OperatorExecute(
|
|
OperatorName => $ExpressionData->{Operator}->{Name},
|
|
Attribute => $AttributeType,
|
|
Selector => $Expression->{Selector},
|
|
ObjectData => $ExpressionObjectData,
|
|
CompareValue => $Expression->{CompareValue},
|
|
UserID => $Param{UserID},
|
|
);
|
|
|
|
# return result of the expressions execution
|
|
return $Result;
|
|
}
|
|
|
|
=head1 PRIVATE INTERFACE
|
|
|
|
=head2 _ExpressionMatchInit()
|
|
|
|
Returns object, attribute and operator of a given expression.
|
|
|
|
my $ExpressionData = $ConditionObject->_ExpressionMatchInit(
|
|
Expression => $ExpressionRef,
|
|
UserID => 1,
|
|
);
|
|
|
|
=cut
|
|
|
|
sub _ExpressionMatchInit {
|
|
my ( $Self, %Param ) = @_;
|
|
|
|
# extract expression
|
|
my $Expression = $Param{Expression};
|
|
|
|
# declare expression data
|
|
my %ExpressionData;
|
|
|
|
# get object data
|
|
$ExpressionData{Object} = $Self->ObjectGet(
|
|
ObjectID => $Expression->{ObjectID},
|
|
UserID => $Param{UserID},
|
|
);
|
|
|
|
# check for object data
|
|
if ( !$ExpressionData{Object} ) {
|
|
$Kernel::OM->Get('Kernel::System::Log')->Log(
|
|
Priority => 'error',
|
|
Message => "No value for 'Object' with ID '$Expression->{ObjectID}'!",
|
|
);
|
|
return;
|
|
}
|
|
|
|
# get attribute data
|
|
$ExpressionData{Attribute} = $Self->AttributeGet(
|
|
AttributeID => $Expression->{AttributeID},
|
|
UserID => $Param{UserID},
|
|
);
|
|
|
|
# check for attribute data
|
|
if ( !$ExpressionData{Attribute} ) {
|
|
$Kernel::OM->Get('Kernel::System::Log')->Log(
|
|
Priority => 'error',
|
|
Message => "No value for 'Attribute' with ID '$Expression->{AttributeID}'!",
|
|
);
|
|
return;
|
|
}
|
|
|
|
# get operator data
|
|
$ExpressionData{Operator} = $Self->OperatorGet(
|
|
OperatorID => $Expression->{OperatorID},
|
|
UserID => $Param{UserID},
|
|
);
|
|
|
|
# check for operator data
|
|
if ( !$ExpressionData{Operator} ) {
|
|
$Kernel::OM->Get('Kernel::System::Log')->Log(
|
|
Priority => 'error',
|
|
Message => "No value for 'Operator' with ID '$Expression->{OperatorID}'!",
|
|
);
|
|
return;
|
|
}
|
|
|
|
return \%ExpressionData;
|
|
}
|
|
|
|
1;
|
|
|
|
=head1 TERMS AND CONDITIONS
|
|
|
|
This software is part of the OTRS project (L<https://otrs.org/>).
|
|
|
|
This software comes with ABSOLUTELY NO WARRANTY. For details, see
|
|
the enclosed file COPYING for license information (GPL). If you
|
|
did not receive this file, see L<https://www.gnu.org/licenses/gpl-3.0.txt>.
|
|
|
|
=cut
|