/*
* Copyright (c) 2013, 2016 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.security.impl;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.common.branch.CDOBranchPoint;
import org.eclipse.emf.cdo.expressions.EvaluationContext;
import org.eclipse.emf.cdo.expressions.Expression;
import org.eclipse.emf.cdo.expressions.impl.EvaluationContextImpl;
import org.eclipse.emf.cdo.security.ExpressionFilter;
import org.eclipse.emf.cdo.security.SecurityPackage;
import org.eclipse.emf.cdo.security.impl.PermissionImpl.CommitImpactContext;
import org.eclipse.emf.ecore.EClass;
/**
* <!-- begin-user-doc -->
* An implementation of the model object '<em><b>Expression Filter</b></em>'.
* @since 4.3
* <!-- end-user-doc -->
* <p>
* The following features are implemented:
* </p>
* <ul>
* <li>{@link org.eclipse.emf.cdo.security.impl.ExpressionFilterImpl#getExpression <em>Expression</em>}</li>
* </ul>
*
* @generated
*/
public class ExpressionFilterImpl extends ObjectFilterImpl implements ExpressionFilter
{
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
protected ExpressionFilterImpl()
{
super();
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
protected EClass eStaticClass()
{
return SecurityPackage.Literals.EXPRESSION_FILTER;
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public Expression getExpression()
{
return (Expression)eGet(SecurityPackage.Literals.EXPRESSION_FILTER__EXPRESSION, true);
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public void setExpression(Expression newExpression)
{
eSet(SecurityPackage.Literals.EXPRESSION_FILTER__EXPRESSION, newExpression);
}
@Override
protected boolean filter(CDOObject object, CDOBranchPoint securityContext)
{
EvaluationContext evaluationContext = new EvaluationContextImpl(object);
Expression expression = getExpression();
return (Boolean)expression.evaluate(evaluationContext);
}
public boolean isImpacted(CommitImpactContext context)
{
// TODO Implement impact analysis in the expression model
return true;
}
public String format()
{
Expression expression = getExpression();
if (expression == null)
{
return "[?]";
}
return "[" + expression + "]";
}
} // ExpressionFilterImpl