RelationalFieldTransformerAssociationEditingDialog.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.mappingsplugin.ui.mapping.relational;

import java.awt.Component;
import java.util.Iterator;

import org.eclipse.persistence.tools.workbench.framework.context.WorkbenchContext;
import org.eclipse.persistence.tools.workbench.mappingsmodel.db.MWColumn;
import org.eclipse.persistence.tools.workbench.mappingsmodel.mapping.relational.MWRelationalFieldTransformerAssociation;
import org.eclipse.persistence.tools.workbench.mappingsmodel.mapping.relational.MWRelationalTransformationMapping;
import org.eclipse.persistence.tools.workbench.mappingsplugin.ui.mapping.FieldTransformerAssociationEditingDialog;
import org.eclipse.persistence.tools.workbench.uitools.app.BufferedPropertyValueModel;
import org.eclipse.persistence.tools.workbench.uitools.app.PropertyAspectAdapter;
import org.eclipse.persistence.tools.workbench.uitools.app.PropertyValueModel;
import org.eclipse.persistence.tools.workbench.uitools.app.ValueModel;


final class RelationalFieldTransformerAssociationEditingDialog
    extends FieldTransformerAssociationEditingDialog
{
    // **************** Static creators ***************************************

    static void promptToAddFieldTransformerAssociation(
        MWRelationalTransformationMapping transformationMapping, WorkbenchContext context
    ) {
        MWRelationalFieldTransformerAssociation association =
            transformationMapping.buildEmptyFieldTransformerAssociation();
        RelationalFieldTransformerAssociationEditor editor =
            new RelationalFieldTransformerAssociationEditor(association);
        RelationalFieldTransformerAssociationEditingDialog dialog
            = new RelationalFieldTransformerAssociationEditingDialog(editor, context);
        dialog.show();

        if (dialog.wasConfirmed()) {
            editor.commit();
            transformationMapping.addFieldTransformerAssociation(association);
        }
    }

    static void promptToEditFieldTransformerAssociation(
        MWRelationalFieldTransformerAssociation association, WorkbenchContext context
    ) {
        RelationalFieldTransformerAssociationEditor editor =
            new RelationalFieldTransformerAssociationEditor(association);
        RelationalFieldTransformerAssociationEditingDialog dialog
            = new RelationalFieldTransformerAssociationEditingDialog(editor, context);
        dialog.show();

        if (dialog.wasConfirmed()) {
            editor.commit();
        }
    }


    // **************** Constructors ******************************************

    private RelationalFieldTransformerAssociationEditingDialog(
        RelationalFieldTransformerAssociationEditor associationEditor,
        WorkbenchContext context
    ) {
        super(associationEditor, context);
    }


    // **************** Initialization ****************************************

    protected void initialize(FieldTransformerAssociationEditor associationEditor) {
        super.initialize(associationEditor);
        this.associationEditor().fieldHolder().addPropertyChangeListener(ValueModel.VALUE, this.validatingListener);
    }

    protected Component buildMainPanel() {
        return new RelationalFieldTransformerAssociationEditingPanel(this.associationEditor(), this.getWorkbenchContext());
    }

    protected void updateMessage() {
        super.updateMessage();

        if (this.associationEditor().field() == null) {
            this.setErrorMessageKey("FIELD_TRANSFORMER_ASSOCIATION_EDITING_DIALOG.NULL_FIELD_ERROR");
        }

        if (this.associationEditor().fieldIsDuplicate()) {
            this.setWarningMessageKey("FIELD_TRANSFORMER_ASSOCIATION_EDITING_DIALOG.DUPLICATE_FIELD_WARNING");
        }
    }

    // **************** Behavior **********************************************

    protected void prepareToShow() {
        pack();
        setSize(Math.max(600, getWidth()), getHeight());
        this.setLocationRelativeTo(this.getParent());
    }


    // **************** Convenience *******************************************

    private RelationalFieldTransformerAssociationEditor associationEditor() {
        return (RelationalFieldTransformerAssociationEditor) this.associationEditor;
    }


    // **************** Member classes ****************************************

    private static class RelationalFieldTransformerAssociationEditor
        extends AbstractFieldTransformerAssociationEditor
        implements RelationalFieldTransformerAssociationEditingPanel.RelationalFieldTransformerAssociationSpec
    {
        // **************** Variables *****************************************

        private BufferedPropertyValueModel fieldHolder;

        private BufferedPropertyValueModel.Trigger fieldTrigger;


        // **************** Constructors **************************************

        protected RelationalFieldTransformerAssociationEditor(MWRelationalFieldTransformerAssociation association) {
            super(association);
            this.fieldTrigger = new BufferedPropertyValueModel.Trigger();
        }


        // **************** Convenience ***************************************

        private MWRelationalFieldTransformerAssociation association() {
            return (MWRelationalFieldTransformerAssociation) this.association;
        }

        private MWRelationalTransformationMapping transformationMapping() {
            return (MWRelationalTransformationMapping) this.association().getMapping();
        }


        // **************** "Field" *******************************************

        public PropertyValueModel fieldHolder() {
            if (this.fieldHolder == null) {
                this.fieldHolder = this.buildFieldHolder();
            }

            return this.fieldHolder;
        }

        private BufferedPropertyValueModel buildFieldHolder() {
            return new BufferedPropertyValueModel(this.buildInternalFieldHolder(), this.fieldTrigger);
        }

        private PropertyValueModel buildInternalFieldHolder() {
            return new PropertyAspectAdapter(MWRelationalFieldTransformerAssociation.FIELD_PROPERTY, this.association()) {
                protected Object getValueFromSubject() {
                    return ((MWRelationalFieldTransformerAssociation) this.subject).getColumn();
                }

                protected void setValueOnSubject(Object value) {
                    ((MWRelationalFieldTransformerAssociation) this.subject).setColumn((MWColumn) value);
                }
            };
        }

        protected MWColumn field() {
            return (MWColumn) this.fieldHolder().getValue();
        }

        public Iterator candidateFields() {
            return this.transformationMapping().candidateColumns();
        }

        public boolean fieldIsDuplicate() {
            return this.association().duplicateField(this.field());
        }


        // **************** Editing *******************************************

        public void commit() {
            super.commit();
            this.fieldTrigger.accept();
        }
    }
}