/*
* Copyright (C) 2009 JavaRosa
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.openrosa.client.jr.xpath.expr;
import java.io.IOException;
import org.openrosa.client.java.io.DataInputStream;
import org.openrosa.client.java.io.DataOutputStream;
import org.openrosa.client.jr.core.model.condition.EvaluationContext;
import org.openrosa.client.jr.core.model.instance.FormInstance;
import org.openrosa.client.jr.core.util.externalizable.DeserializationException;
import org.openrosa.client.jr.core.util.externalizable.PrototypeFactory;
import org.openrosa.client.jr.xpath.XPathUnsupportedException;
public class XPathUnionExpr extends XPathBinaryOpExpr {
public XPathUnionExpr () { } //for deserialization
public XPathUnionExpr (XPathExpression a, XPathExpression b) {
super(a, b);
}
public Object eval (FormInstance model, EvaluationContext evalContext) {
throw new XPathUnsupportedException("nodeset union operation");
}
public String toString () {
return super.toString("union");
}
public boolean equals (Object o) {
if (o instanceof XPathUnionExpr) {
return super.equals(o);
} else {
return false;
}
}
public void readExternal(DataInputStream in, PrototypeFactory pf) throws IOException, DeserializationException {
super.readExternal(in, pf);
}
public void writeExternal(DataOutputStream out) throws IOException {
super.writeExternal(out);
}
}