package org.opengroupware.jope.appserver.associations;

import org.opengroupware.jope.appserver.WOAssociation;
import org.opengroupware.jope.eocontrol.EOQualifier;
import org.opengroupware.jope.eocontrol.EOQualifierEvaluation;

/*
 * WOQualifierAssociation
 * 
 * An association which returns a boolean value depending on a qualifier.
 * 
 * TODO: document more
 */
public class WOQualifierAssociation extends WOAssociation {
  
  protected EOQualifier qualifier;

  public WOQualifierAssociation(EOQualifier _q) {
    this.qualifier = _q;
  }
  public WOQualifierAssociation(String _q) {
    this(EOQualifier.qualifierWithQualifierFormat(_q));
  }
  
  /* accessors */
  
  public EOQualifier qualifier() {
    return this.qualifier;
  }

  @Override
  public String keyPath() {
    return this.qualifier.stringRepresentation();
  }

  /* reflection */
  
  public boolean isValueConstant() {
    return false;
  }
  
  public boolean isValueSettable() {
    return false;
  }
  
  public boolean isValueConstantInComponent(Object _cursor) {
    return false;
  }
  
  public boolean isValueSettableInComponent(Object _cursor) {
    return false;
  }
  
  /* values */
  
  public boolean booleanValueInComponent(Object _cursor) {
    return ((EOQualifierEvaluation)this.qualifier).evaluateWithObject(_cursor);
  }
  
  public Object valueInComponent(Object _cursor) {
    return this.booleanValueInComponent(_cursor) ? Boolean.TRUE : Boolean.FALSE;
  }

  public int intValueInComponent(Object _cursor) {
    return this.booleanValueInComponent(_cursor) ? 1 : 0;
  }

  public String stringValueInComponent(Object _cursor) {
    return this.booleanValueInComponent(_cursor) ? "true" : "false";
  }
}