Commons JXPath example source code file (TestFunctions.java)

This example Commons JXPath source code file (TestFunctions.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons JXPath tags/keywords

arraylist, basicnodeset, boolean, collection, collection, expressioncontext, jxpathcontext, nestedtestbean, nestedtestbean, object, string, string, testfunctions, testfunctions, util

The Commons JXPath TestFunctions.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.jxpath.ri.compiler;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.jxpath.BasicNodeSet;
import org.apache.commons.jxpath.ExpressionContext;
import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.NestedTestBean;
import org.apache.commons.jxpath.Pointer;
import org.apache.commons.jxpath.NodeSet;

/**
 * @author Dmitri Plotnikov
 * @version $Revision: 495033 $ $Date: 2007-01-10 17:15:33 -0600 (Wed, 10 Jan 2007) $
 */
public class TestFunctions {

    private int foo;
    private String bar;

    public TestFunctions() {
    }

    public TestFunctions(int foo, String bar) {
        this.foo = foo;
        this.bar = bar;
    }

    public TestFunctions(ExpressionContext context, String bar) {
        this.foo =
            ((Number) context.getContextNodePointer().getValue()).intValue();
        this.bar = bar;
    }
    
    public TestFunctions(int foo, Object object, boolean another) {
        this.foo = foo;
        bar = String.valueOf(object);
    }

    public int getFoo() {
        return foo;
    }

    public String getBar() {
        return bar;
    }

    public void doit() {
    }

    public TestFunctions setFooAndBar(int foo, String bar) {
        this.foo = foo;
        this.bar = bar;
        return this;
    }

    public static TestFunctions build(int foo, String bar) {
        return new TestFunctions(foo, bar);
    }

    public String toString() {
        return "foo=" + foo + "; bar=" + bar;
    }

    public static String path(ExpressionContext context) {
        return context.getContextNodePointer().asPath();
    }

    public String instancePath(ExpressionContext context) {
        return context.getContextNodePointer().asPath();
    }

    public String pathWithSuffix(ExpressionContext context, String suffix) {
        return context.getContextNodePointer().asPath() + suffix;
    }

    public String className(
        ExpressionContext context,
        ExpressionContext child) 
    {
        return context.getContextNodePointer().asPath();
    }

    /**
     * Returns true if the current node in the current context is a map
     */
    public static boolean isMap(ExpressionContext context) {
        Pointer ptr = context.getContextNodePointer();
        return ptr == null ? false : (ptr.getValue() instanceof Map);
    }

    /**
     * Returns the number of nodes in the context that is passed as
     * the first argument.
     */
    public static int count(ExpressionContext context, Collection col) {
        for (Iterator iter = col.iterator(); iter.hasNext();) {
            Object element = iter.next();
            if (!(element instanceof String)) {
                throw new RuntimeException("Invalid argument");
            }
        };
        return col.size();
    }
    
    public static int countPointers(NodeSet nodeSet) {
        return nodeSet.getPointers().size();
    }
    
    public static String string(String string) {
        return string;
    }
    
    public static Collection collection() {
        ArrayList list = new ArrayList();
        list.add(new NestedTestBean("foo"));
        list.add(new NestedTestBean("bar"));
        return list;
    }
    
    public static NodeSet nodeSet(ExpressionContext context) {
        JXPathContext jxpathCtx = context.getJXPathContext();
        BasicNodeSet set = new BasicNodeSet();
        set.add(jxpathCtx.getPointer("/beans[1]"));
        set.add(jxpathCtx.getPointer("/beans[2]"));
        
        return set;
    }
    
    public static Collection items(Collection arg) {
        return arg;
    }

    public static Boolean isInstance(Object o, Class c) {
        return c.isInstance(o) ? Boolean.TRUE : Boolean.FALSE;
    }

}