de.japkit.el.juel.MapRootResolver Maven / Gradle / Ivy

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package de.japkit.el.juel;

import com.google.common.base.Objects;
import java.beans.FeatureDescriptor;
import java.util.Iterator;
import java.util.Map;
import javax.el.ELContext;
import javax.el.ELResolver;
import javax.el.PropertyNotFoundException;

/**
 * Resolves root properties (base == null) from a map.
 */
@SuppressWarnings("all")
public class MapRootResolver extends ELResolver {
  private Map map;
  
  private boolean isResolvable(final Object base) {
    return Objects.equal(base, null);
  }
  
  private boolean resolve(final ELContext context, final Object base, final Object property) {
    context.setPropertyResolved((this.isResolvable(base) && (property instanceof String)));
    return context.isPropertyResolved();
  }
  
  @Override
  public Class getCommonPropertyType(final ELContext context, final Object base) {
    Class _xifexpression = null;
    boolean _isResolvable = this.isResolvable(context);
    if (_isResolvable) {
      _xifexpression = String.class;
    } else {
      _xifexpression = null;
    }
    return _xifexpression;
  }
  
  @Override
  public Iterator getFeatureDescriptors(final ELContext context, final Object base) {
    return null;
  }
  
  @Override
  public Class getType(final ELContext context, final Object base, final Object property) {
    Class