jpa/plugins/org.eclipse.jpt.eclipselink.core/src/org/eclipse/jpt/eclipselink/core/internal/context/persistence/EclipseLinkPersistenceUnitProperties.java - dali/webtools.dali - Git at Google

 /*******************************************************************************
  * Copyright (c) 2008, 2009 Oracle. All rights reserved.
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0, which accompanies this distribution
  * and is available at http://www.eclipse.org/legal/epl-v10.html.
  *
  * Contributors:
  *     Oracle - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jpt.eclipselink.core.internal.context.persistence;

 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import org.eclipse.jpt.core.JpaProject;
 import org.eclipse.jpt.core.context.persistence.PersistenceUnit;
 import org.eclipse.jpt.utility.internal.ClassTools;
 import org.eclipse.jpt.utility.internal.CollectionTools;
 import org.eclipse.jpt.utility.internal.model.AbstractModel;

 /**
  * EclipseLinkPersistenceUnitProperties
  *
  * Listens to the propertyListAdapter
  */
 public abstract class EclipseLinkPersistenceUnitProperties extends AbstractModel
 				implements PersistenceUnitProperties
 {
 	private PersistenceUnit persistenceUnit;

 	// key = EclipseLink property key; value = property id
 	private Map<String, String> propertyNames;

 	private static final long serialVersionUID = 1L;

 	// ********** constructors / initialization **********
 	protected EclipseLinkPersistenceUnitProperties(PersistenceUnit parent) {
 		super();
 		this.initialize(parent);
 	}

 	protected void initialize(PersistenceUnit parent) {
 		this.persistenceUnit = parent;

 		this.initializePropertyNames();
 		this.initializeProperties();
 	}

 	protected void initializePropertyNames() {
 		this.propertyNames = new HashMap<String, String>();
 		this.addPropertyNames(this.propertyNames);
 	}

 	/**
 	 * Initializes properties with values from the persistence unit.
 	 */
 	protected abstract void initializeProperties();

 	// ********** behavior **********
 	public PersistenceUnit getPersistenceUnit() {
 		return this.persistenceUnit;
 	}

 	public JpaProject getJpaProject() {
 		return this.persistenceUnit.getJpaProject();
 	}

 	private Map<String, String> propertyNames() {
 		return this.propertyNames;
 	}

 	/**
 	 * Adds property names key/value pairs, used by the methods: itemIsProperty
 	 * and propertyIdFor.
 	 *
 	 * key = EclipseLink property key; value = property id
 	 */
 	protected abstract void addPropertyNames(Map<String, String> pNames);

 	/**
 	 * Method used for identifying the given property.
 	 */
 	public boolean itemIsProperty(PersistenceUnit.Property item) {
 		if (item == null) {
 			throw new NullPointerException();
 		}
 		return this.propertyNames().keySet().contains(item.getName());
 	}

 	/**
 	 * Returns the property name used for change notification of the given
 	 * property.
 	 */
 	public String propertyIdOf(PersistenceUnit.Property property) {
 		String propertyId = this.propertyNames().get(property.getName());
 		if (propertyId == null) {
 			throw new IllegalArgumentException("Illegal property: " + property); //$NON-NLS-1$
 		}
 		return propertyId;
 	}

 	/*
 	 * Get the EclipseLink key of the given property
 	 */
 	protected String eclipseLinkKeyOf(String propertyId) {
 		for (String eclipseLinkKey : this.propertyNames().keySet()) {
 			if (this.propertyNames().get(eclipseLinkKey).equals(propertyId)) {
 				return eclipseLinkKey;
 			}
 		}
 		throw new IllegalArgumentException("Illegal property ID: " + propertyId); //$NON-NLS-1$
 	}

 	// ****** get/set String convenience methods *******
 	/**
 	 * Returns the String value of the given Property from the PersistenceXml.
 	 */
 	// TOREVIEW - handle incorrect String in persistence.xml
 	protected String getStringValue(String elKey) {
 		PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
 		return (p == null) ? null : p.getValue();
 	}

 	protected String getStringValue(String key, String keySuffix) {
 		return this.getStringValue((keySuffix == null) ? key : key + keySuffix);
 	}

 	/**
 	 * Put the given String value into the PersistenceXml.
 	 * @param key -
 	 *            EclipseLink Key
 	 * @param newValue
 	 *            value to be associated with the key
 	 */
 	protected void putStringValue(String key, String newValue) {
 		this.putStringValue(key, null, newValue, false);
 	}

 	/**
 	 * Put the given String value into the PersistenceXml.
 	 * @param key
 	 *            EclipseLink Key
 	 * @param newValue
 	 *            value to be associated with the key
 	 * @param allowDuplicate
 	 */
 	protected void putStringValue(String key, String newValue, boolean allowDuplicate) {
 		this.putStringValue(key, null, newValue, allowDuplicate);
 	}

 	/**
 	 * Put the given String value into the PersistenceXml.
 	 * @param key
 	 *            EclipseLink Key
 	 * @param keySuffix
 	 *            e.g. entity name
 	 * @param newValue
 	 *            value to be associated with the key
 	 * @param allowDuplicate
 	 */
 	protected void putStringValue(String key, String keySuffix, String newValue, boolean allowDuplicate) {
 		String elKey = (keySuffix == null) ? key : key + keySuffix;
 		this.getPersistenceUnit().setProperty(elKey, newValue, allowDuplicate);
 	}

 	// ****** Integer convenience methods *******
 	/**
 	 * Returns the Integer value of the given Property from the PersistenceXml.
 	 */
 	// TOREVIEW - handle incorrect eclipseLinkValue String in
 	// persistence.xml
 	protected Integer getIntegerValue(String elKey) {
 		PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
 		return (p == null) ? null : getIntegerValueOf(p.getValue());
 	}

 	protected Integer getIntegerValue(String key, String keySuffix) {
 		return this.getIntegerValue((keySuffix == null) ? key : key + keySuffix);
 	}

 	/**
 	 * Put the given Integer value into the PersistenceXml.
 	 * @param key -
 	 *            EclipseLink Key
 	 * @param newValue
 	 *            value to be associated with the key
 	 */
 	protected void putIntegerValue(String key, Integer newValue) {
 		this.putIntegerValue(key, null, newValue, false);
 	}

 	/**
 	 * Put the given Integer value into the PersistenceXml.
 	 * @param key
 	 *            EclipseLink Key
 	 * @param newValue
 	 *            value to be associated with the key
 	 * @param allowDuplicate
 	 */
 	protected void putIntegerValue(String key, Integer newValue, boolean allowDuplicate) {
 		this.putIntegerValue(key, null, newValue, allowDuplicate);
 	}

 	/**
 	 * Put the given Integer value into the PersistenceXml.
 	 * @param key
 	 *            EclipseLink Key
 	 * @param keySuffix
 	 *            e.g. entity name
 	 * @param newValue
 	 *            value to be associated with the key
 	 * @param allowDuplicate
 	 */
 	protected void putIntegerValue(String key, String keySuffix, Integer newValue, boolean allowDuplicate) {
 		String elKey = (keySuffix == null) ? key : key + keySuffix;
 		String elValue = (newValue == null) ? null : newValue.toString();
 		this.getPersistenceUnit().setProperty(elKey, elValue, allowDuplicate);
 	}

 	// ****** Boolean convenience methods *******
 	/**
 	 * Returns the Boolean value of the given Property from the PersistenceXml.
 	 */
 	// TOREVIEW - handle incorrect eclipseLinkValue String in
 	// persistence.xml
 	protected Boolean getBooleanValue(String elKey) {
 		PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
 		return (p == null) ? null : getBooleanValueOf(p.getValue());
 	}

 	protected Boolean getBooleanValue(String key, String keySuffix) {
 		return this.getBooleanValue((keySuffix == null) ? key : key + keySuffix);
 	}

 	/**
 	 * Put the given Boolean value into the PersistenceXml.
 	 * @param key
 	 *            EclipseLink Key
 	 * @param newValue
 	 *            value to be associated with the key
 	 */
 	protected void putBooleanValue(String key, Boolean newValue) {
 		this.putBooleanValue(key, null, newValue, false);
 	}

 	/**
 	 * Put the given Boolean value into the PersistenceXml.
 	 * @param key
 	 *            EclipseLink Key
 	 * @param newValue
 	 *            value to be associated with the key
 	 * @param allowDuplicate
 	 */
 	protected void putBooleanValue(String key, Boolean newValue, boolean allowDuplicate) {
 		this.putBooleanValue(key, null, newValue, allowDuplicate);
 	}

 	/**
 	 * Put the given Boolean value into the PersistenceXml.
 	 * @param key
 	 *            EclipseLink Key
 	 * @param keySuffix
 	 *            e.g. entity name
 	 * @param newValue
 	 *            value to be associated with the key
 	 * @param allowDuplicate
 	 */
 	protected void putBooleanValue(String key, String keySuffix, Boolean newValue, boolean allowDuplicate) {
 		String elKey = (keySuffix == null) ? key : key + keySuffix;
 		String elValue = (newValue == null) ? null : newValue.toString();
 		this.getPersistenceUnit().setProperty(elKey, elValue, allowDuplicate);
 	}

 	// ****** Enum convenience methods *******
 	/**
 	 * Returns the Enum value of the given Property from the PersistenceXml.
 	 */
 	// TOREVIEW - handle incorrect eclipseLinkValue String in persistence.xml
 	protected <T extends Enum<T>> T getEnumValue(String elKey, T[] enumValues) {
 		PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
 		return (p == null) ? null : getEnumValueOf(p.getValue(), enumValues);
 	}

 	protected <T extends Enum<T>> T getEnumValue(String key, String keySuffix, T[] enumValues) {
 		return this.getEnumValue((keySuffix == null) ? key : key + keySuffix, enumValues);
 	}

 	/**
 	 * Put the given Enum value into the PersistenceXml.
 	 *
 	 * @param key -
 	 *            EclipseLink Key
 	 */
 	protected <T extends Enum<T>> void putEnumValue(String key, T newValue) {
 		this.putEnumValue(key, null, newValue, false);
 	}

 	protected <T extends Enum<T>> void putEnumValue(String key, T newValue, boolean allowDuplicate) {
 		this.putEnumValue(key, null, newValue, allowDuplicate);
 	}

 	protected <T extends Enum<T>> void putEnumValue(String key, String keySuffix, T newValue, boolean allowDuplicate) {
 		String elKey = (keySuffix == null) ? key : key + keySuffix;
 		this.getPersistenceUnit().setProperty(elKey, getEclipseLinkStringValueOf(newValue), allowDuplicate);
 	}

 	// ******** Convenience methods ********
 	/**
 	 * Put into persistenceUnit properties.
 	 *
 	 * @param key -
 	 *            property name
 	 * @param value -
 	 *            property value
 	 */
 	protected void putProperty(String key, Object value) {
 		putProperty(key, value, false);
 	}

 	@SuppressWarnings("unchecked")
 	protected void putProperty(String key, Object value, boolean allowDuplicates) {
 		String elKey = this.eclipseLinkKeyOf(key);
 		if ((value != null) && value.getClass().isEnum()) {
 			this.putEnumValue(elKey, (Enum) value, allowDuplicates);
 		} else {
 			this.putEclipseLinkProperty(elKey, value, allowDuplicates);
 		}
 	}

 	private void putEclipseLinkProperty(String key, Object value, boolean allowDuplicates) {
 		String string = (value == null) ? null : value.toString();
 		this.getPersistenceUnit().setProperty(key, string, allowDuplicates);
 	}

 	/**
 	 * Removes a persistenceUnit property.
 	 *
 	 * @param key -
 	 *            property name
 	 * @param value -
 	 *            property value
 	 */
 	protected void removeProperty(String key, String value) {
 		String elKey = this.eclipseLinkKeyOf(key);

 		this.getPersistenceUnit().removeProperty(elKey, value);
 	}

 	protected Set<PersistenceUnit.Property> getPropertiesSetWithPrefix(String keyPrefix) {
 		return CollectionTools.set(this.getPersistenceUnit().propertiesWithNamePrefix(keyPrefix));
 	}

 	/**
 	 * Extracts the entityName of the specified property name. If the property name
 	 * has no suffix, return an empty string.
 	 */
 	protected String extractEntityNameOf(PersistenceUnit.Property property) {
 		return extractEntityNameOf(property.getName());
 	}

 	/**
 	 * Extracts the entityName of the specified string. If the string
 	 * has no suffix, return an empty string.
 	 */
 	protected String extractEntityNameOf(String propertyName) {
 		int index = propertyName.lastIndexOf('.');
 		if (index == -1) {
 			return ""; //$NON-NLS-1$
 		}
 		return propertyName.substring(index + 1);
 	}

 	// ****** Static methods *******
 	/**
 	 * Returns the EclipseLink string value of the given property value.
 	 */
 	public static String getEclipseLinkStringValueOf(Object value) {
 		if (value == null) {
 			return null;
 		}
 		if (value.getClass().isEnum()) {
 			return (String) ClassTools.staticFieldValue(value.getClass(), value.toString().toUpperCase(Locale.ENGLISH));
 		}
 		return value.toString();
 	}

 	/**
 	 * Returns the enum constant of the specified enum type with the specified
 	 * EclipseLink value string.
 	 */
 	public static <T extends Enum<T>> T getEnumValueOf(String elStringValue, T[] enumValues) {
 		for (T enumValue : enumValues) {
 			if (getEclipseLinkStringValueOf(enumValue).equals(elStringValue)) {
 				return enumValue;
 			}
 		}
 		return null;
 	}

 	public static Boolean getBooleanValueOf(String elStringValue) {
 		if (elStringValue == null) {
 			return null;
 		}
 		return Boolean.valueOf(elStringValue);
 	}

 	public static Integer getIntegerValueOf(String elStringValue) {
 		if (elStringValue == null) {
 			return null;
 		}
 		return Integer.valueOf(elStringValue);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2008, 2009 Oracle. All rights reserved.
	* This program and the accompanying materials are made available under the
	* terms of the Eclipse Public License v1.0, which accompanies this distribution
	* and is available at http://www.eclipse.org/legal/epl-v10.html.
	*
	* Contributors:
	* Oracle - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jpt.eclipselink.core.internal.context.persistence;

	import java.util.HashMap;
	import java.util.Locale;
	import java.util.Map;
	import java.util.Set;
	import org.eclipse.jpt.core.JpaProject;
	import org.eclipse.jpt.core.context.persistence.PersistenceUnit;
	import org.eclipse.jpt.utility.internal.ClassTools;
	import org.eclipse.jpt.utility.internal.CollectionTools;
	import org.eclipse.jpt.utility.internal.model.AbstractModel;

	/**
	* EclipseLinkPersistenceUnitProperties
	*
	* Listens to the propertyListAdapter
	*/
	public abstract class EclipseLinkPersistenceUnitProperties extends AbstractModel
	implements PersistenceUnitProperties
	{
	private PersistenceUnit persistenceUnit;

	// key = EclipseLink property key; value = property id
	private Map<String, String> propertyNames;

	private static final long serialVersionUID = 1L;

	// ******** constructors / initialization ********
	protected EclipseLinkPersistenceUnitProperties(PersistenceUnit parent) {
	super();
	this.initialize(parent);
	}

	protected void initialize(PersistenceUnit parent) {
	this.persistenceUnit = parent;

	this.initializePropertyNames();
	this.initializeProperties();
	}

	protected void initializePropertyNames() {
	this.propertyNames = new HashMap<String, String>();
	this.addPropertyNames(this.propertyNames);
	}

	/**
	* Initializes properties with values from the persistence unit.
	*/
	protected abstract void initializeProperties();

	// ******** behavior ********
	public PersistenceUnit getPersistenceUnit() {
	return this.persistenceUnit;
	}

	public JpaProject getJpaProject() {
	return this.persistenceUnit.getJpaProject();
	}

	private Map<String, String> propertyNames() {
	return this.propertyNames;
	}

	/**
	* Adds property names key/value pairs, used by the methods: itemIsProperty
	* and propertyIdFor.
	*
	* key = EclipseLink property key; value = property id
	*/
	protected abstract void addPropertyNames(Map<String, String> pNames);

	/**
	* Method used for identifying the given property.
	*/
	public boolean itemIsProperty(PersistenceUnit.Property item) {
	if (item == null) {
	throw new NullPointerException();
	}
	return this.propertyNames().keySet().contains(item.getName());
	}

	/**
	* Returns the property name used for change notification of the given
	* property.
	*/
	public String propertyIdOf(PersistenceUnit.Property property) {
	String propertyId = this.propertyNames().get(property.getName());
	if (propertyId == null) {
	throw new IllegalArgumentException("Illegal property: " + property); //$NON-NLS-1$
	}
	return propertyId;
	}

	/*
	* Get the EclipseLink key of the given property
	*/
	protected String eclipseLinkKeyOf(String propertyId) {
	for (String eclipseLinkKey : this.propertyNames().keySet()) {
	if (this.propertyNames().get(eclipseLinkKey).equals(propertyId)) {
	return eclipseLinkKey;
	}
	}
	throw new IllegalArgumentException("Illegal property ID: " + propertyId); //$NON-NLS-1$
	}

	// **** get/set String convenience methods *****
	/**
	* Returns the String value of the given Property from the PersistenceXml.
	*/
	// TOREVIEW - handle incorrect String in persistence.xml
	protected String getStringValue(String elKey) {
	PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
	return (p == null) ? null : p.getValue();
	}

	protected String getStringValue(String key, String keySuffix) {
	return this.getStringValue((keySuffix == null) ? key : key + keySuffix);
	}

	/**
	* Put the given String value into the PersistenceXml.
	* @param key -
	* EclipseLink Key
	* @param newValue
	* value to be associated with the key
	*/
	protected void putStringValue(String key, String newValue) {
	this.putStringValue(key, null, newValue, false);
	}

	/**
	* Put the given String value into the PersistenceXml.
	* @param key
	* EclipseLink Key
	* @param newValue
	* value to be associated with the key
	* @param allowDuplicate
	*/
	protected void putStringValue(String key, String newValue, boolean allowDuplicate) {
	this.putStringValue(key, null, newValue, allowDuplicate);
	}

	/**
	* Put the given String value into the PersistenceXml.
	* @param key
	* EclipseLink Key
	* @param keySuffix
	* e.g. entity name
	* @param newValue
	* value to be associated with the key
	* @param allowDuplicate
	*/
	protected void putStringValue(String key, String keySuffix, String newValue, boolean allowDuplicate) {
	String elKey = (keySuffix == null) ? key : key + keySuffix;
	this.getPersistenceUnit().setProperty(elKey, newValue, allowDuplicate);
	}

	// **** Integer convenience methods *****
	/**
	* Returns the Integer value of the given Property from the PersistenceXml.
	*/
	// TOREVIEW - handle incorrect eclipseLinkValue String in
	// persistence.xml
	protected Integer getIntegerValue(String elKey) {
	PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
	return (p == null) ? null : getIntegerValueOf(p.getValue());
	}

	protected Integer getIntegerValue(String key, String keySuffix) {
	return this.getIntegerValue((keySuffix == null) ? key : key + keySuffix);
	}

	/**
	* Put the given Integer value into the PersistenceXml.
	* @param key -
	* EclipseLink Key
	* @param newValue
	* value to be associated with the key
	*/
	protected void putIntegerValue(String key, Integer newValue) {
	this.putIntegerValue(key, null, newValue, false);
	}

	/**
	* Put the given Integer value into the PersistenceXml.
	* @param key
	* EclipseLink Key
	* @param newValue
	* value to be associated with the key
	* @param allowDuplicate
	*/
	protected void putIntegerValue(String key, Integer newValue, boolean allowDuplicate) {
	this.putIntegerValue(key, null, newValue, allowDuplicate);
	}

	/**
	* Put the given Integer value into the PersistenceXml.
	* @param key
	* EclipseLink Key
	* @param keySuffix
	* e.g. entity name
	* @param newValue
	* value to be associated with the key
	* @param allowDuplicate
	*/
	protected void putIntegerValue(String key, String keySuffix, Integer newValue, boolean allowDuplicate) {
	String elKey = (keySuffix == null) ? key : key + keySuffix;
	String elValue = (newValue == null) ? null : newValue.toString();
	this.getPersistenceUnit().setProperty(elKey, elValue, allowDuplicate);
	}

	// **** Boolean convenience methods *****
	/**
	* Returns the Boolean value of the given Property from the PersistenceXml.
	*/
	// TOREVIEW - handle incorrect eclipseLinkValue String in
	// persistence.xml
	protected Boolean getBooleanValue(String elKey) {
	PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
	return (p == null) ? null : getBooleanValueOf(p.getValue());
	}

	protected Boolean getBooleanValue(String key, String keySuffix) {
	return this.getBooleanValue((keySuffix == null) ? key : key + keySuffix);
	}

	/**
	* Put the given Boolean value into the PersistenceXml.
	* @param key
	* EclipseLink Key
	* @param newValue
	* value to be associated with the key
	*/
	protected void putBooleanValue(String key, Boolean newValue) {
	this.putBooleanValue(key, null, newValue, false);
	}

	/**
	* Put the given Boolean value into the PersistenceXml.
	* @param key
	* EclipseLink Key
	* @param newValue
	* value to be associated with the key
	* @param allowDuplicate
	*/
	protected void putBooleanValue(String key, Boolean newValue, boolean allowDuplicate) {
	this.putBooleanValue(key, null, newValue, allowDuplicate);
	}

	/**
	* Put the given Boolean value into the PersistenceXml.
	* @param key
	* EclipseLink Key
	* @param keySuffix
	* e.g. entity name
	* @param newValue
	* value to be associated with the key
	* @param allowDuplicate
	*/
	protected void putBooleanValue(String key, String keySuffix, Boolean newValue, boolean allowDuplicate) {
	String elKey = (keySuffix == null) ? key : key + keySuffix;
	String elValue = (newValue == null) ? null : newValue.toString();
	this.getPersistenceUnit().setProperty(elKey, elValue, allowDuplicate);
	}

	// **** Enum convenience methods *****
	/**
	* Returns the Enum value of the given Property from the PersistenceXml.
	*/
	// TOREVIEW - handle incorrect eclipseLinkValue String in persistence.xml
	protected <T extends Enum<T>> T getEnumValue(String elKey, T[] enumValues) {
	PersistenceUnit.Property p = this.getPersistenceUnit().getProperty(elKey);
	return (p == null) ? null : getEnumValueOf(p.getValue(), enumValues);
	}

	protected <T extends Enum<T>> T getEnumValue(String key, String keySuffix, T[] enumValues) {
	return this.getEnumValue((keySuffix == null) ? key : key + keySuffix, enumValues);
	}

	/**
	* Put the given Enum value into the PersistenceXml.
	*
	* @param key -
	* EclipseLink Key
	*/
	protected <T extends Enum<T>> void putEnumValue(String key, T newValue) {
	this.putEnumValue(key, null, newValue, false);
	}

	protected <T extends Enum<T>> void putEnumValue(String key, T newValue, boolean allowDuplicate) {
	this.putEnumValue(key, null, newValue, allowDuplicate);
	}

	protected <T extends Enum<T>> void putEnumValue(String key, String keySuffix, T newValue, boolean allowDuplicate) {
	String elKey = (keySuffix == null) ? key : key + keySuffix;
	this.getPersistenceUnit().setProperty(elKey, getEclipseLinkStringValueOf(newValue), allowDuplicate);
	}

	// ****** Convenience methods ******
	/**
	* Put into persistenceUnit properties.
	*
	* @param key -
	* property name
	* @param value -
	* property value
	*/
	protected void putProperty(String key, Object value) {
	putProperty(key, value, false);
	}

	@SuppressWarnings("unchecked")
	protected void putProperty(String key, Object value, boolean allowDuplicates) {
	String elKey = this.eclipseLinkKeyOf(key);
	if ((value != null) && value.getClass().isEnum()) {
	this.putEnumValue(elKey, (Enum) value, allowDuplicates);
	} else {
	this.putEclipseLinkProperty(elKey, value, allowDuplicates);
	}
	}

	private void putEclipseLinkProperty(String key, Object value, boolean allowDuplicates) {
	String string = (value == null) ? null : value.toString();
	this.getPersistenceUnit().setProperty(key, string, allowDuplicates);
	}

	/**
	* Removes a persistenceUnit property.
	*
	* @param key -
	* property name
	* @param value -
	* property value
	*/
	protected void removeProperty(String key, String value) {
	String elKey = this.eclipseLinkKeyOf(key);

	this.getPersistenceUnit().removeProperty(elKey, value);
	}

	protected Set<PersistenceUnit.Property> getPropertiesSetWithPrefix(String keyPrefix) {
	return CollectionTools.set(this.getPersistenceUnit().propertiesWithNamePrefix(keyPrefix));
	}

	/**
	* Extracts the entityName of the specified property name. If the property name
	* has no suffix, return an empty string.
	*/
	protected String extractEntityNameOf(PersistenceUnit.Property property) {
	return extractEntityNameOf(property.getName());
	}

	/**
	* Extracts the entityName of the specified string. If the string
	* has no suffix, return an empty string.
	*/
	protected String extractEntityNameOf(String propertyName) {
	int index = propertyName.lastIndexOf('.');
	if (index == -1) {
	return ""; //$NON-NLS-1$
	}
	return propertyName.substring(index + 1);
	}

	// **** Static methods *****
	/**
	* Returns the EclipseLink string value of the given property value.
	*/
	public static String getEclipseLinkStringValueOf(Object value) {
	if (value == null) {
	return null;
	}
	if (value.getClass().isEnum()) {
	return (String) ClassTools.staticFieldValue(value.getClass(), value.toString().toUpperCase(Locale.ENGLISH));
	}
	return value.toString();
	}

	/**
	* Returns the enum constant of the specified enum type with the specified
	* EclipseLink value string.
	*/
	public static <T extends Enum<T>> T getEnumValueOf(String elStringValue, T[] enumValues) {
	for (T enumValue : enumValues) {
	if (getEclipseLinkStringValueOf(enumValue).equals(elStringValue)) {
	return enumValue;
	}
	}
	return null;
	}

	public static Boolean getBooleanValueOf(String elStringValue) {
	if (elStringValue == null) {
	return null;
	}
	return Boolean.valueOf(elStringValue);
	}

	public static Integer getIntegerValueOf(String elStringValue) {
	if (elStringValue == null) {
	return null;
	}
	return Integer.valueOf(elStringValue);
	}
	}