org.javarosa.xpath.expr.XPathUnionExpr Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of opendatakit-javarosa Show documentation

A Java library for rendering forms that are compliant with ODK XForms spec

The newest version!

/*
 * 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.javarosa.xpath.expr;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import org.javarosa.core.model.condition.EvaluationContext;
import org.javarosa.core.model.instance.DataInstance;
import org.javarosa.core.util.externalizable.DeserializationException;
import org.javarosa.core.util.externalizable.PrototypeFactory;
import org.javarosa.xpath.XPathUnsupportedException;

public class XPathUnionExpr extends XPathBinaryOpExpr {
    public XPathUnionExpr () { } //for deserialization

    public XPathUnionExpr (XPathExpression a, XPathExpression b) {
        super(a, b);
    }

    public Object eval (DataInstance 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);
    }
}