MWAttributeContainerAccessor.java

package org.eclipse.persistence.tools.workbench.mappingsmodel.mapping.xml;

import java.util.List;

import org.eclipse.persistence.mappings.foundation.AbstractCompositeCollectionMapping;
import org.eclipse.persistence.mappings.foundation.AbstractCompositeObjectMapping;
import org.eclipse.persistence.oxm.XMLDescriptor;
import org.eclipse.persistence.oxm.mappings.XMLCompositeCollectionMapping;
import org.eclipse.persistence.oxm.mappings.XMLCompositeObjectMapping;
import org.eclipse.persistence.tools.workbench.mappingsmodel.MWNode;
import org.eclipse.persistence.tools.workbench.mappingsmodel.ProblemConstants;
import org.eclipse.persistence.tools.workbench.mappingsmodel.handles.MWAttributeHandle;
import org.eclipse.persistence.tools.workbench.mappingsmodel.handles.MWHandle;
import org.eclipse.persistence.tools.workbench.mappingsmodel.handles.MWHandle.NodeReferenceScrubber;
import org.eclipse.persistence.tools.workbench.mappingsmodel.meta.MWClassAttribute;
import org.eclipse.persistence.tools.workbench.utility.node.Node;

public final class MWAttributeContainerAccessor extends MWContainerAccessor {

    // **************** Variables *********************************************

    private MWAttributeHandle accessorAttributeHandle;
        public final static String ACCESSOR_ATTRIBUTE_PROPERTY = "accessorAttributeHandle";

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

    /** Default constructor - for TopLink use only */
    public MWAttributeContainerAccessor() {
        super();
    }

    public MWAttributeContainerAccessor(MWNode parent, MWClassAttribute attribute) {
        super(parent);
        this.setAccessorAttribute(attribute);
    }

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

    protected void initialize(Node parentNode) {
        super.initialize(parentNode);
        this.accessorAttributeHandle = new MWAttributeHandle(this, this.buildAccessorAttributeScrubber());
    }

    private NodeReferenceScrubber buildAccessorAttributeScrubber() {
        return new NodeReferenceScrubber() {
            public void nodeReferenceRemoved(Node node, MWHandle handle) {
                MWAttributeContainerAccessor.this.setAccessorAttribute(null);
            }
            public String toString() {
                return "MWAttributeContainerAccessor.buildAccessorAttributeScrubber()";
            }
        };
    }

    // **************** Problems handling ********************************************

    @Override
    protected void addProblemsTo(List currentProblems) {
        super.addProblemsTo(currentProblems);
        this.addAttributeConfiguredProblemsToList(currentProblems);
    }

    private void addAttributeConfiguredProblemsToList(List currProblems) {
        if (this.getAccessorAttribute() == null) {
            this.buildProblem(ProblemConstants.MAPPING_CONTAINER_ACCESSOR_ATTRIBUTE_NOT_SELECTED);
        }
    }

    // **************** Containment hierarchy ****************************************

    protected void addChildrenTo(List children) {
        super.addChildrenTo(children);
        children.add(this.accessorAttributeHandle);
    }

    // **************** Accessor Attribute *************************************

    public MWClassAttribute getAccessorAttribute() {
        return this.accessorAttributeHandle.getAttribute();
    }

    public void setAccessorAttribute(MWClassAttribute newAccessorAttribute) {
        MWClassAttribute oldAccessorAttribute = this.getAccessorAttribute();
        this.accessorAttributeHandle.setAttribute(newAccessorAttribute);
        if (this.attributeValueHasChanged(oldAccessorAttribute, newAccessorAttribute)) {
            this.firePropertyChanged(ACCESSOR_ATTRIBUTE_PROPERTY, oldAccessorAttribute, newAccessorAttribute);
            this.firePropertyChanged(CONTAINER_ACCESSOR_PROPERTY, oldAccessorAttribute, newAccessorAttribute);
        }
    }

    // **************** Runtime conversion ************************************

    public void adjustRuntimeMapping(AbstractCompositeObjectMapping mapping) {
        ((XMLCompositeObjectMapping)mapping).setContainerAttributeName(getAccessorAttribute().getName());
    }

    public void adjustRuntimeMapping(AbstractCompositeCollectionMapping mapping) {
        ((XMLCompositeCollectionMapping)mapping).setContainerAttributeName(getAccessorAttribute().getName());
    }

    // **************** TopLink Methods ***************************************

    public static XMLDescriptor buildDescriptor() {
        XMLDescriptor descriptor = new XMLDescriptor();
        descriptor.setJavaClass(MWAttributeContainerAccessor.class);
        descriptor.getInheritancePolicy().setParentClass(MWContainerAccessor.class);

        // class handle
        XMLCompositeObjectMapping accessorClassHandleMapping = new XMLCompositeObjectMapping();
        accessorClassHandleMapping.setAttributeName("accessorAttributeHandle");
        accessorClassHandleMapping.setGetMethodName("getAccessorAttributeForTopLink");
        accessorClassHandleMapping.setSetMethodName("setAccessorAttributeForTopLink");
        accessorClassHandleMapping.setReferenceClass(MWAttributeHandle.class);
        accessorClassHandleMapping.setXPath("accessor-attribute-handle");
        descriptor.addMapping(accessorClassHandleMapping);

        return descriptor;
    }

    private MWAttributeHandle getAccessorAttributeForTopLink() {
        return (this.accessorAttributeHandle.getAttribute() == null) ? null : this.accessorAttributeHandle;
    }

    private void setAccessorAttributeForTopLink(MWAttributeHandle attribute) {
        NodeReferenceScrubber scrubber = this.buildAccessorAttributeScrubber();
        this.accessorAttributeHandle = ((attribute == null) ? new MWAttributeHandle(this, scrubber) : attribute.setScrubber(scrubber));
    }

    // **************** UI support *********************************************

    @Override
    public String accessorDisplayString() {
        MWClassAttribute attribute = this.getAccessorAttribute();
        return (attribute == null) ? null : attribute.displayString();
    }

    @Override
    public boolean isNull() {
        return false;
    }

    @Override
    public boolean isMethods() {
        return false;
    }

    @Override
    public boolean isAttribute() {
        return true;
    }
}