/*
* 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.IdentityHashMap;
import java.util.List;
import java.util.Map;
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.ActionCol52;
import org.drools.workbench.models.guided.dtable.shared.model.ActionInsertFactCol52;
import org.drools.workbench.models.guided.dtable.shared.model.ActionInsertFactFieldsPattern;
import org.drools.workbench.models.guided.dtable.shared.model.DTCellValue52;
import org.drools.workbench.models.guided.dtable.shared.model.GuidedDecisionTable52;
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.ActionInsertFactFieldsDefinedEvent;
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.datamodel.ImportAddedEvent;
import org.kie.workbench.common.widgets.client.datamodel.ImportRemovedEvent;
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 new Facts and fields.
* This page does not use the GuidedDecisionTable model directly; instead
* maintaining its own Pattern-to-Action associations.
*/
@Dependent
public class ActionInsertFactFieldsPage extends AbstractGuidedDecisionTableWizardPage
implements
ActionInsertFactFieldsPageView.Presenter {
@Inject
private ActionInsertFactFieldsPageView view;
@Inject
private Event<DuplicatePatternsEvent> duplicatePatternsEvent;
@Inject
private Event<ActionInsertFactFieldsDefinedEvent> actionInsertFactFieldsDefinedEvent;
@Inject
private Event<WizardPageStatusChangeEvent> wizardPageStatusChangeEvent;
//GuidedDecisionTable52 maintains a single collection of Actions, linked to patterns by boundName. Thus if multiple
//patterns are bound to the same name we cannot distinguish which Actions relate to which Patterns. The Wizard therefore
//maintains it's own internal association of Patterns to Actions. IdentityHashMap is used as it is possible to have two
//identically defined Patterns (i.e. they have the same property values) although they represent different instances.
//A WeakIdentityHashMap would have been more appropriate, however JavaScript has no concept of a weak reference, and so
//it can't be implement in GWT. In the absence of such a Map an Event is raised by FactPatternsPage when a Pattern is
//removed that is handled here to synchronise the Pattern lists.
private Map<ActionInsertFactFieldsPattern, List<ActionInsertFactCol52>> patternToActionsMap = new IdentityHashMap<ActionInsertFactFieldsPattern, List<ActionInsertFactCol52>>();
@Override
public String getTitle() {
return GuidedDecisionTableConstants.INSTANCE.DecisionTableWizardActionInsertFacts();
}
@Override
public void initialise() {
view.init( this );
view.setValidator( getValidator() );
patternToActionsMap.clear();
//Set-up validator for the pattern-to-action mapping voodoo
getValidator().setPatternToActionInsertFactFieldsMap( patternToActionsMap );
//Set-up a factory for value editors
view.setDTCellValueWidgetFactory( DTCellValueWidgetFactory.getInstance( model,
oracle,
false,
allowEmptyValues() ) );
//Available types
final List<String> availableTypes = Arrays.asList( oracle.getFactTypes() );
view.setAvailableFactTypes( availableTypes );
//Existing ActionInsertFactCols (should be empty for a new Decision Table)
for ( ActionCol52 a : model.getActionCols() ) {
if ( a instanceof ActionInsertFactCol52 ) {
final ActionInsertFactCol52 aif = (ActionInsertFactCol52) a;
final ActionInsertFactFieldsPattern p = lookupExistingInsertFactPattern( aif.getBoundName() );
final List<ActionInsertFactCol52> actions = patternToActionsMap.get( p );
getValidator().addActionPattern( p );
actions.add( aif );
}
}
view.setChosenPatterns( new ArrayList<ActionInsertFactFieldsPattern>() );
view.setAvailableFields( new ArrayList<AvailableField>() );
view.setChosenFields( new ArrayList<ActionInsertFactCol52>() );
content.setWidget( view );
}
private ActionInsertFactFieldsPattern lookupExistingInsertFactPattern( final String boundName ) {
for ( ActionInsertFactFieldsPattern p : patternToActionsMap.keySet() ) {
if ( p.getBoundName().equals( boundName ) ) {
return p;
}
}
final ActionInsertFactFieldsPattern p = new ActionInsertFactFieldsPattern();
patternToActionsMap.put( p,
new ArrayList<ActionInsertFactCol52>() );
return p;
}
@Override
public void prepareView() {
//Nothing to do here, this page is self-contained
}
@Override
public boolean isComplete() {
//Do all Patterns have unique bindings?
final boolean arePatternBindingsUnique = getValidator().arePatternBindingsUnique();
//Signal duplicates to other pages
final DuplicatePatternsEvent event = new DuplicatePatternsEvent( arePatternBindingsUnique );
duplicatePatternsEvent.fire( event );
//Are all Actions defined?
boolean areActionInsertFieldsDefined = true;
for ( List<ActionInsertFactCol52> actions : patternToActionsMap.values() ) {
for ( ActionInsertFactCol52 a : actions ) {
if ( !getValidator().isActionValid( a ) ) {
areActionInsertFieldsDefined = false;
break;
}
}
}
//Signal Action Insert Fact Fields to other pages
final ActionInsertFactFieldsDefinedEvent eventFactFields = new ActionInsertFactFieldsDefinedEvent( areActionInsertFieldsDefined );
actionInsertFactFieldsDefinedEvent.fire( eventFactFields );
return arePatternBindingsUnique && areActionInsertFieldsDefined;
}
public void handleImportAddedEvent( @Observes ImportAddedEvent event ) {
if ( !event.getDataModelOracle().equals( this.oracle ) ) {
return;
}
final List<String> availableTypes = Arrays.asList( oracle.getFactTypes() );
view.setAvailableFactTypes( availableTypes );
}
public void handleImportRemovedEvent( @Observes ImportRemovedEvent event ) {
if ( !event.getDataModelOracle().equals( this.oracle ) ) {
return;
}
final List<String> availableTypes = Arrays.asList( oracle.getFactTypes() );
view.setAvailableFactTypes( availableTypes );
}
public void onDuplicatePatterns( final @Observes DuplicatePatternsEvent event ) {
view.setArePatternBindingsUnique( event.getArePatternBindingsUnique() );
}
public void onActionInsertFactFieldsDefined( final @Observes ActionInsertFactFieldsDefinedEvent event ) {
view.setAreActionInsertFactFieldsDefined( event.getAreActionInsertFactFieldsDefined() );
}
@Override
public void addPattern( final ActionInsertFactFieldsPattern pattern ) {
patternToActionsMap.put( pattern,
new ArrayList<ActionInsertFactCol52>() );
getValidator().addActionPattern( pattern );
}
@Override
public void removePattern( final ActionInsertFactFieldsPattern pattern ) {
patternToActionsMap.remove( pattern );
getValidator().removeActionPattern( pattern );
}
@Override
public void selectPattern( final ActionInsertFactFieldsPattern pattern ) {
//Add fields available
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 );
}
view.setAvailableFields( availableFields );
//Set fields already chosen
List<ActionInsertFactCol52> actionsForPattern = patternToActionsMap.get( pattern );
if ( actionsForPattern == null ) {
actionsForPattern = new ArrayList<ActionInsertFactCol52>();
patternToActionsMap.put( pattern,
actionsForPattern );
}
view.setChosenFields( actionsForPattern );
}
} );
}
@Override
public void makeResult( final GuidedDecisionTable52 model ) {
//Copy actions to decision table model
int fi = 1;
for ( Map.Entry<ActionInsertFactFieldsPattern, List<ActionInsertFactCol52>> ps : patternToActionsMap.entrySet() ) {
final ActionInsertFactFieldsPattern p = ps.getKey();
if ( !getValidator().isPatternValid( p ) ) {
String binding = NEW_FACT_PREFIX + ( fi++ );
p.setBoundName( binding );
while ( !getValidator().isPatternBindingUnique( p ) ) {
binding = NEW_FACT_PREFIX + ( fi++ );
p.setBoundName( binding );
}
}
final String factType = p.getFactType();
final String boundName = p.getBoundName();
final boolean isLogicalInsert = p.isInsertedLogically();
for ( ActionInsertFactCol52 aif : ps.getValue() ) {
aif.setFactType( factType );
aif.setBoundName( boundName );
aif.setInsertLogical( isLogicalInsert );
model.getActionCols().add( aif );
}
}
}
@Override
public GuidedDecisionTable52.TableFormat getTableFormat() {
return model.getTableFormat();
}
@Override
public boolean hasEnums( final ActionInsertFactCol52 selectedAction ) {
for ( Map.Entry<ActionInsertFactFieldsPattern, List<ActionInsertFactCol52>> e : this.patternToActionsMap.entrySet() ) {
if ( e.getValue().contains( selectedAction ) ) {
final String factType = e.getKey().getFactType();
final String factField = selectedAction.getFactField();
return this.oracle.hasEnums( factType,
factField );
}
}
return false;
}
@Override
public void assertDefaultValue( final ActionInsertFactCol52 selectedAction ) {
final List<String> valueList = Arrays.asList( modelUtils.getValueList( selectedAction ) );
if ( valueList.size() > 0 ) {
final String defaultValue = cellUtils.asString( selectedAction.getDefaultValue() );
if ( !valueList.contains( defaultValue ) ) {
selectedAction.getDefaultValue().clearValues();
}
} else {
//Ensure the Default Value has been updated to represent the column's data-type.
final DTCellValue52 defaultValue = selectedAction.getDefaultValue();
final DataType.DataTypes dataType = cellUtils.getDataType( selectedAction );
cellUtils.assertDTCellValue( dataType,
defaultValue );
}
}
@Override
public void stateChanged() {
final WizardPageStatusChangeEvent event = new WizardPageStatusChangeEvent( this );
wizardPageStatusChangeEvent.fire( event );
}
}