Package org.eclipse.core.internal.databinding.beans

Source Code of org.eclipse.core.internal.databinding.beans.AnonymousPojoListProperty

/*******************************************************************************
* Copyright (c) 2008, 2009 Matthew Hall and others.
* 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:
*     Matthew Hall - initial API and implementation (bug 247997)
*     Matthew Hall - bug 264307
******************************************************************************/

package org.eclipse.core.internal.databinding.beans;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.core.databinding.beans.PojoProperties;
import org.eclipse.core.databinding.property.list.DelegatingListProperty;
import org.eclipse.core.databinding.property.list.IListProperty;

/**
* @since 3.3
*
*/
public class AnonymousPojoListProperty extends DelegatingListProperty {
  private final String propertyName;

  private Map delegates;

  /**
   * @param propertyName
   * @param elementType
   */
  public AnonymousPojoListProperty(String propertyName, Class elementType) {
    super(elementType);
    this.propertyName = propertyName;
    this.delegates = new HashMap();
  }

  protected IListProperty doGetDelegate(Object source) {
    Class beanClass = source.getClass();
    if (delegates.containsKey(beanClass))
      return (IListProperty) delegates.get(beanClass);

    IListProperty delegate;
    try {
      delegate = PojoProperties.list(beanClass, propertyName,
          (Class) getElementType());
    } catch (IllegalArgumentException noSuchProperty) {
      delegate = null;
    }
    delegates.put(beanClass, delegate);
    return delegate;
  }

  public String toString() {
    String s = "?." + propertyName + "{}"; //$NON-NLS-1$ //$NON-NLS-2$
    Class elementType = (Class) getElementType();
    if (elementType != null)
      s += "<" + BeanPropertyHelper.shortClassName(elementType) + ">"; //$NON-NLS-1$//$NON-NLS-2$
    return s;
  }
}
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