/*
* Copyright 2011 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.workbench.screens.guided.dtable.client.wizard.pages;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.enterprise.context.Dependent;
import javax.enterprise.event.Event;
import javax.enterprise.event.Observes;
import javax.inject.Inject;
import org.drools.workbench.models.datamodel.oracle.DataType;
import org.drools.workbench.models.datamodel.oracle.ModelField;
import org.drools.workbench.models.datamodel.rule.BaseSingleFieldConstraint;
import org.drools.workbench.models.guided.dtable.shared.model.ConditionCol52;
import org.drools.workbench.models.guided.dtable.shared.model.DTCellValue52;
import org.drools.workbench.models.guided.dtable.shared.model.GuidedDecisionTable52;
import org.drools.workbench.models.guided.dtable.shared.model.Pattern52;
import org.drools.workbench.screens.guided.dtable.client.resources.i18n.GuidedDecisionTableConstants;
import org.drools.workbench.screens.guided.dtable.client.widget.DTCellValueWidgetFactory;
import org.drools.workbench.screens.guided.dtable.client.wizard.pages.events.ConditionsDefinedEvent;
import org.drools.workbench.screens.guided.dtable.client.wizard.pages.events.DuplicatePatternsEvent;
import org.kie.workbench.common.widgets.client.callbacks.Callback;
import org.kie.workbench.common.widgets.client.widget.HumanReadableDataTypes;
import org.uberfire.client.wizards.WizardPageStatusChangeEvent;
/**
* A page for the guided Decision Table Wizard to define Fact Pattern
* Constraints
*/
@Dependent
public class FactPatternConstraintsPage extends AbstractGuidedDecisionTableWizardPage
implements
FactPatternConstraintsPageView.Presenter {
@Inject
private FactPatternConstraintsPageView view;
@Inject
private Event<ConditionsDefinedEvent> conditionsDefinedEvent;
@Inject
private Event<WizardPageStatusChangeEvent> wizardPageStatusChangeEvent;
@Override
public String getTitle() {
return GuidedDecisionTableConstants.INSTANCE.DecisionTableWizardFactPatternConstraints();
}
@Override
public void initialise() {
view.init( this );
view.setValidator( getValidator() );
view.setChosenConditions( new ArrayList<ConditionCol52>() );
//Set-up a factory for value editors
view.setDTCellValueWidgetFactory( DTCellValueWidgetFactory.getInstance( model,
oracle,
false,
allowEmptyValues() ) );
content.setWidget( view );
}
@Override
public void prepareView() {
//Setup the available patterns, that could have changed each time this page is visited
view.setAvailablePatterns( this.model.getPatterns() );
}
@Override
public boolean isComplete() {
//Have all patterns conditions been defined?
boolean areConditionsDefined = true;
for ( Pattern52 p : model.getPatterns() ) {
for ( ConditionCol52 c : p.getChildColumns() ) {
if ( !getValidator().isConditionValid( c ) ) {
areConditionsDefined = false;
break;
}
}
}
//Signal Condition definitions to other pages
final ConditionsDefinedEvent event = new ConditionsDefinedEvent( areConditionsDefined );
conditionsDefinedEvent.fire( event );
return areConditionsDefined;
}
public void onDuplicatePatterns( final @Observes DuplicatePatternsEvent event ) {
view.setArePatternBindingsUnique( event.getArePatternBindingsUnique() );
}
public void onConditionsDefined( final @Observes ConditionsDefinedEvent event ) {
view.setAreConditionsDefined( event.getAreConditionsDefined() );
}
@Override
public void selectPattern( final Pattern52 pattern ) {
//Pattern is null when programmatically deselecting an item
if ( pattern == null ) {
return;
}
//Add Fact fields
final String type = pattern.getFactType();
oracle.getFieldCompletions( type,
new Callback<ModelField[]>() {
@Override
public void callback( final ModelField[] fields ) {
final List<AvailableField> availableFields = new ArrayList<AvailableField>();
for ( ModelField modelField : fields ) {
final String fieldName = modelField.getName();
final String fieldType = oracle.getFieldType( type,
fieldName );
final String fieldDisplayType = HumanReadableDataTypes.getUserFriendlyTypeName( fieldType );
final AvailableField field = new AvailableField( fieldName,
fieldType,
fieldDisplayType,
BaseSingleFieldConstraint.TYPE_LITERAL );
availableFields.add( field );
}
//Add predicates
if ( model.getTableFormat() == GuidedDecisionTable52.TableFormat.EXTENDED_ENTRY ) {
final AvailableField field = new AvailableField( GuidedDecisionTableConstants.INSTANCE.DecisionTableWizardPredicate(),
BaseSingleFieldConstraint.TYPE_PREDICATE );
availableFields.add( field );
}
view.setAvailableFields( availableFields );
view.setChosenConditions( pattern.getChildColumns() );
}
} );
}
@Override
public void setChosenConditions( final Pattern52 pattern,
final List<ConditionCol52> conditions ) {
pattern.getChildColumns().clear();
pattern.getChildColumns().addAll( conditions );
}
@Override
public void getOperatorCompletions( final Pattern52 selectedPattern,
final ConditionCol52 selectedCondition,
final Callback<String[]> callback ) {
final String factType = selectedPattern.getFactType();
final String factField = selectedCondition.getFactField();
this.oracle.getOperatorCompletions( factType,
factField,
new Callback<String[]>() {
@Override
public void callback( final String[] ops ) {
//Operators "in" and "not in" are only allowed if the Calculation Type is a Literal
final List<String> filteredOps = new ArrayList<String>();
for ( String op : ops ) {
filteredOps.add( op );
}
if ( BaseSingleFieldConstraint.TYPE_LITERAL != selectedCondition.getConstraintValueType() ) {
filteredOps.remove( "in" );
}
//But remove "in" if the Fact\Field is enumerated
if ( oracle.hasEnums( factType,
factField ) ) {
filteredOps.remove( "in" );
}
final String[] displayOps = new String[ filteredOps.size() ];
filteredOps.toArray( displayOps );
callback.callback( displayOps );
}
} );
}
@Override
public GuidedDecisionTable52.TableFormat getTableFormat() {
return model.getTableFormat();
}
@Override
public boolean hasEnum( final Pattern52 selectedPattern,
final ConditionCol52 selectedCondition ) {
final String factType = selectedPattern.getFactType();
final String factField = selectedCondition.getFactField();
return oracle.hasEnums( factType,
factField );
}
@Override
public boolean requiresValueList( final Pattern52 selectedPattern,
final ConditionCol52 selectedCondition ) {
//Don't show a Value List if either the Fact\Field is empty
final String factType = selectedPattern.getFactType();
final String factField = selectedCondition.getFactField();
boolean enableValueList = !( ( factType == null || "".equals( factType ) ) || ( factField == null || "".equals( factField ) ) );
//Don't show Value List if operator does not accept one
if ( enableValueList ) {
enableValueList = validator.doesOperatorAcceptValueList( selectedCondition );
}
//Don't show a Value List if the Fact\Field has an enumeration
if ( enableValueList ) {
enableValueList = !oracle.hasEnums( factType,
factField );
}
return enableValueList;
}
@Override
public void assertDefaultValue( final Pattern52 selectedPattern,
final ConditionCol52 selectedCondition ) {
final List<String> valueList = Arrays.asList( modelUtils.getValueList( selectedCondition ) );
if ( valueList.size() > 0 ) {
final String defaultValue = cellUtils.asString( selectedCondition.getDefaultValue() );
if ( !valueList.contains( defaultValue ) ) {
selectedCondition.getDefaultValue().clearValues();
}
} else {
//Ensure the Default Value has been updated to represent the column's data-type.
final DTCellValue52 defaultValue = selectedCondition.getDefaultValue();
final DataType.DataTypes dataType = cellUtils.getDataType( selectedPattern,
selectedCondition );
cellUtils.assertDTCellValue( dataType,
defaultValue );
}
}
@Override
public void stateChanged() {
final WizardPageStatusChangeEvent event = new WizardPageStatusChangeEvent( this );
wizardPageStatusChangeEvent.fire( event );
}
}