Package org.eclipse.persistence.internal.jpa.metadata.queries

Source Code of org.eclipse.persistence.internal.jpa.metadata.queries.ConstructorResultMetadata

/*******************************************************************************
* Copyright (c) 2012 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:
*     02/08/2012-2.4 Guy Pelletier
*       - 350487: JPA 2.1 Specification defined support for Stored Procedure Calls
*     06/20/2012-2.5 Guy Pelletier
*       - 350487: JPA 2.1 Specification defined support for Stored Procedure Calls
******************************************************************************/ 
package org.eclipse.persistence.internal.jpa.metadata.queries;

import java.util.List;
import java.util.ArrayList;

import org.eclipse.persistence.internal.jpa.metadata.ORMetadata;
import org.eclipse.persistence.internal.jpa.metadata.accessors.MetadataAccessor;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAccessibleObject;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataClass;
import org.eclipse.persistence.internal.jpa.metadata.xml.XMLEntityMappings;
import org.eclipse.persistence.queries.ConstructorResult;

/**
* INTERNAL:
* Object to hold onto an entity result metadata.
*
* Key notes:
* - any metadata mapped from XML to this class must be compared in the
*   equals method.
* - all metadata mapped from XML must be initialized in the initXMLObject
*   method.
* - when loading from annotations, the constructor accepts the metadata
*   accessor this metadata was loaded from. Used it to look up any
*   'companion' annotation needed for processing.
* - methods should be preserved in alphabetical order.
*
* @author Guy Pelletier
* @since TopLink EJB 3.0 Reference Implementation
*/
public class ConstructorResultMetadata extends ORMetadata {
    private MetadataClass targetClass;
    private String targetClassName;
    private List<ColumnResultMetadata> columnResults = new ArrayList<ColumnResultMetadata>();
   
    /**
     * INTERNAL:
     * Used for XML loading.
     */
    public ConstructorResultMetadata() {
        super("<constructor-result>");
    }

    /**
     * INTERNAL:
     * Used for annotation loading.
     */
    public ConstructorResultMetadata(MetadataAnnotation constructorResult, MetadataAccessor accessor) {
        super(constructorResult, accessor);
       
        targetClass = getMetadataClass((String) constructorResult.getAttribute("targetClass"));
       
        for (Object columnResult : (Object[]) constructorResult.getAttributeArray("columns")) {
            columnResults.add(new ColumnResultMetadata((MetadataAnnotation) columnResult, accessor));
        }
    }
   
    /**
     * INTERNAL:
     */
    @Override
    public boolean equals(Object objectToCompare) {
        if (objectToCompare instanceof ConstructorResultMetadata) {
            ConstructorResultMetadata constructorResult = (ConstructorResultMetadata) objectToCompare;
           
            if (! valuesMatch(getTargetClass(), constructorResult.getTargetClass())) {
                return false;
            }
           
            return valuesMatch(getColumnResults(), constructorResult.getColumnResults());
        }
       
        return false;
    }
   
    /**
     * INTERNAL:
     * Used for OX mapping.
     */
    public List<ColumnResultMetadata> getColumnResults() {
        return columnResults;
    }
   
    /**
     * INTERNAL:
     */
    public MetadataClass getTargetClass() {
        return targetClass;
    }
   
    /**
     * INTERNAL:
     * Used for OX mapping.
     */
    public String getTargetClassName() {
        return targetClassName;
    }
   
    /**
     * INTERNAL:
     */
    @Override
    public void initXMLObject(MetadataAccessibleObject accessibleObject, XMLEntityMappings entityMappings) {
        super.initXMLObject(accessibleObject, entityMappings);
       
        // Initialize lists of ORMetadata objects.
        initXMLObjects(getColumnResults(), accessibleObject);
       
        setTargetClass(initXMLClassName(getTargetClassName()));
    }
   
    /**
     * INTERNAL:
     * Process the constructor result for the caller.
     */
    public ConstructorResult process() {
        // Create a new constructor result with the target class.
        ConstructorResult constructorResult = new ConstructorResult(getJavaClassName(getTargetClass()));
       
        // Process the column results.
        for (ColumnResultMetadata columnResult : getColumnResults()) {
            constructorResult.addColumnResult(columnResult.process());
        }

        return constructorResult;
    }
   
    /**
     * INTERNAL:
     * Used for OX mapping.
     */
    public void setColumnResults(List<ColumnResultMetadata> columnResults) {
        this.columnResults = columnResults;
    }
   
    /**
     * INTERNAL:
     */
    public void setTargetClass(MetadataClass targetClass) {
        this.targetClass = targetClass;
    }
   
    /**
     * INTERNAL:
     * Used for OX mapping.
     */
    public void setTargetClassName(String targetClassName) {
        this.targetClassName = targetClassName;
    }
}
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