Commons JXPath example source code file (JXPathCompiledExpressionTest.java)

This example Commons JXPath source code file (JXPathCompiledExpressionTest.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

class, class, expression, expression, hobbit, jxpathcompiledexpression, jxpathcompiledexpression, jxpathcompiledexpressiontest, jxpathcompiledexpressiontest, jxpathtestcase, string

The Commons JXPath JXPathCompiledExpressionTest.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;

import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.JXPathTestCase;
import org.apache.commons.jxpath.ri.compiler.Constant;
import org.apache.commons.jxpath.ri.compiler.CoreFunction;
import org.apache.commons.jxpath.ri.compiler.CoreOperationAdd;
import org.apache.commons.jxpath.ri.compiler.CoreOperationAnd;
import org.apache.commons.jxpath.ri.compiler.CoreOperationDivide;
import org.apache.commons.jxpath.ri.compiler.CoreOperationEqual;
import org.apache.commons.jxpath.ri.compiler.CoreOperationGreaterThan;
import org.apache.commons.jxpath.ri.compiler.CoreOperationGreaterThanOrEqual;
import org.apache.commons.jxpath.ri.compiler.CoreOperationLessThan;
import org.apache.commons.jxpath.ri.compiler.CoreOperationLessThanOrEqual;
import org.apache.commons.jxpath.ri.compiler.CoreOperationMod;
import org.apache.commons.jxpath.ri.compiler.CoreOperationMultiply;
import org.apache.commons.jxpath.ri.compiler.CoreOperationNegate;
import org.apache.commons.jxpath.ri.compiler.CoreOperationNotEqual;
import org.apache.commons.jxpath.ri.compiler.CoreOperationOr;
import org.apache.commons.jxpath.ri.compiler.CoreOperationSubtract;
import org.apache.commons.jxpath.ri.compiler.CoreOperationUnion;
import org.apache.commons.jxpath.ri.compiler.ExpressionPath;
import org.apache.commons.jxpath.ri.compiler.ExtensionFunction;
import org.apache.commons.jxpath.ri.compiler.LocationPath;
import org.apache.commons.jxpath.ri.compiler.NameAttributeTest;
import org.apache.commons.jxpath.ri.compiler.VariableReference;

/**
 * Test compiler.
 *
 * @author Dmitri Plotnikov
 * @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
 */

public class JXPathCompiledExpressionTest extends JXPathTestCase {

    public void testConstant() {
        assertXPathExpression("1", Constant.class);
        assertXPathExpression("1.5", Constant.class);
        assertXPathExpression("'foo'", Constant.class);
    }
    
    public void testCoreFunction() {
        assertXPathExpression("last()", CoreFunction.class);
        assertXPathExpression("position()", CoreFunction.class);
        assertXPathExpression("count(book)", CoreFunction.class);
        assertXPathExpression("id(13)", CoreFunction.class);
        assertXPathExpression("local-name()", CoreFunction.class);
        assertXPathExpression("local-name(book)", CoreFunction.class);
        assertXPathExpression("namespace-uri()", CoreFunction.class);
        assertXPathExpression("namespace-uri(book)", CoreFunction.class);
        assertXPathExpression("name()", CoreFunction.class);
        assertXPathExpression("name(book)", CoreFunction.class);
        assertXPathExpression("string(3)", CoreFunction.class);
        assertXPathExpression("concat('a', 'b')", CoreFunction.class);
        assertXPathExpression("starts-with('a', 'b')", CoreFunction.class);
        assertXPathExpression("contains('a', 'b')", CoreFunction.class);
        assertXPathExpression("substring-before('a', 1)", CoreFunction.class);
        assertXPathExpression("substring-after('a', 2)", CoreFunction.class);
        assertXPathExpression("substring('a', 2)", CoreFunction.class);
        assertXPathExpression("substring('a', 2, 3)", CoreFunction.class);
        assertXPathExpression("string-length('a')", CoreFunction.class);
        assertXPathExpression("normalize-space('a')", CoreFunction.class);
        assertXPathExpression("translate('a', 'b', 'c')", CoreFunction.class);
        assertXPathExpression("boolean('true')", CoreFunction.class);
        assertXPathExpression("not(1)", CoreFunction.class);
        assertXPathExpression("true()", CoreFunction.class);
        assertXPathExpression("false()", CoreFunction.class);
        assertXPathExpression("lang('fr')", CoreFunction.class);
        assertXPathExpression("number('12')", CoreFunction.class);
        assertXPathExpression("sum(book/price)", CoreFunction.class);
        assertXPathExpression("floor(11.4)", CoreFunction.class);
        assertXPathExpression("ceiling(11.4)", CoreFunction.class);
        assertXPathExpression("round(11.4)", CoreFunction.class);
        assertXPathExpression("key('title', 'Hobbit')", CoreFunction.class);
        assertXPathExpression("format-number(12, '##')", CoreFunction.class);
    }
    
    public void testCoreOperationAnd() {
        assertXPathExpression("2 and 4", CoreOperationAnd.class);
        assertXPathExpression("2 > 1 and 4 < 5", CoreOperationAnd.class);
    }
        
    public void testCoreOperationOr() {
        assertXPathExpression("2 or 4", CoreOperationOr.class);
        assertXPathExpression("2 > 1 or 4 < 5", CoreOperationOr.class);
        assertXPathExpression("1 > 1 and 2 <= 2 or 3 = 4", CoreOperationOr.class);
    }

    public void testCoreOperationEqual() {
        assertXPathExpression("2 = 4", CoreOperationEqual.class);
        assertXPathExpression("2 + 1 = 3", CoreOperationEqual.class);
    }
    
    public void testCoreOperationNameAttributeTest() {
        assertXPathExpression("@name = 'bar'", NameAttributeTest.class);
    }

    public void testCoreOperationNotEqual() {
        assertXPathExpression("2 != 4", CoreOperationNotEqual.class);
        assertXPathExpression("2 + 1 != 3", CoreOperationNotEqual.class);
    }

    public void testCoreOperationLessThan() {
        assertXPathExpression("3<4", CoreOperationLessThan.class, "3 < 4");
        assertXPathExpression("3<(2>=1)", CoreOperationLessThan.class, "3 < (2 >= 1)");
    }
    
    public void testCoreOperationLessThanOrEqual() {
        assertXPathExpression("3<=4", CoreOperationLessThanOrEqual.class, "3 <= 4");
        assertXPathExpression("3<=(2>=1)", CoreOperationLessThanOrEqual.class, "3 <= (2 >= 1)");
    }

    public void testCoreOperationGreaterThan() {
        assertXPathExpression("3>4", CoreOperationGreaterThan.class, "3 > 4");
        assertXPathExpression("3>(2>=1)", CoreOperationGreaterThan.class, "3 > (2 >= 1)");
        assertXPathExpression("1 > (1 and 2 <= (2 or 3) = 4)", CoreOperationGreaterThan.class);
    }
    
    public void testCoreOperationGreaterThanOrEqual() {
        assertXPathExpression("3>=4", CoreOperationGreaterThanOrEqual.class, "3 >= 4");
        assertXPathExpression("3>=(2>=1)", CoreOperationGreaterThanOrEqual.class, "3 >= (2 >= 1)");
    }

    public void testCoreOperationDivide() {
        assertXPathExpression("2 div 4", CoreOperationDivide.class);
        assertXPathExpression("2|3 div -3", CoreOperationDivide.class, "2 | 3 div -3");
    }

    public void testCoreOperationMod() {
        assertXPathExpression("2 mod 4", CoreOperationMod.class);
        assertXPathExpression("2|3 mod -3", CoreOperationMod.class, "2 | 3 mod -3");
    }

    public void testCoreOperationMultiply() {
        assertXPathExpression("2*4", CoreOperationMultiply.class, "2 * 4");
        assertXPathExpression("2*(3 + 1)", CoreOperationMultiply.class, "2 * (3 + 1)");
    }
    
    public void testCoreOperationMinus() {
        assertXPathExpression("1 - 1", CoreOperationSubtract.class);
        assertXPathExpression("1 - 1 - 2", CoreOperationSubtract.class);
        assertXPathExpression("1 - (1 - 2)", CoreOperationSubtract.class);
    }
    
    public void testCoreOperationSum() {
        assertXPathExpression("3 + 1 + 4", CoreOperationAdd.class);
        assertXPathExpression("(3 + 1) + 4", CoreOperationAdd.class, "3 + 1 + 4");
        assertXPathExpression("3 + (1 + 4)", CoreOperationAdd.class, "3 + 1 + 4");
        assertXPathExpression("3 + -1", CoreOperationAdd.class, "3 + -1");
        assertXPathExpression("2*-3 + -1", CoreOperationAdd.class, "2 * -3 + -1");
    }
    
    public void testCoreOperationUnaryMinus() {
        assertXPathExpression("-3", CoreOperationNegate.class);
        assertXPathExpression("-(3 + 1)", CoreOperationNegate.class);
    }

    public void testCoreOperationUnion() {
        assertXPathExpression("3 | 1 | 4", CoreOperationUnion.class);
    }
    
    public void testExpressionPath() {
        assertXPathExpression("$x/foo/bar", ExpressionPath.class);
        assertXPathExpression("(2 + 2)/foo/bar", ExpressionPath.class);
        assertXPathExpression("$x[3][2 + 2]/foo/bar", ExpressionPath.class);
    }
    
    public void testExtensionFunction() {
        assertXPathExpression("my:function(3, other.function())", ExtensionFunction.class);
    }
 
    public void testLocationPathAxisSelf() {
        assertXPathExpression("self::foo:bar", LocationPath.class);
        assertXPathExpression(".", LocationPath.class);
    }
    
    public void testLocationPathAxisChild() {
        assertXPathExpression("child::foo:bar", LocationPath.class, "foo:bar");
        assertXPathExpression("foo:bar", LocationPath.class);
        assertXPathExpression("/foo:bar", LocationPath.class);
        assertXPathExpression("/foo/bar", LocationPath.class);
        assertXPathExpression("*", LocationPath.class);
        assertXPathExpression("foo:*", LocationPath.class);
    }
    
    public void testLocationPathAxisParent() {
        assertXPathExpression("parent::foo:bar", LocationPath.class);
        assertXPathExpression("..", LocationPath.class);
    }
    
    public void testLocationPathAxisAttribute() {
        assertXPathExpression("attribute::foo:bar", LocationPath.class, "@foo:bar");
        assertXPathExpression("@foo:bar", LocationPath.class);
        assertXPathExpression("../@foo:bar", LocationPath.class);
        assertXPathExpression("@*", LocationPath.class);
        assertXPathExpression("@*[last()]", LocationPath.class);
    }
    
    public void testLocationPathAxisDescendant() {
        assertXPathExpression("descendant::foo:bar", LocationPath.class);
    }
    
    public void testLocationPathAxisDescendantOrSelf() {
        assertXPathExpression("descendant-or-self::foo:bar", LocationPath.class);
        assertXPathExpression("//foo", LocationPath.class);
        assertXPathExpression("foo//bar", LocationPath.class);
    }
    
    public void testLocationPathAxisOther() {
        assertXPathExpression("ancestor::foo:bar", LocationPath.class);
        assertXPathExpression("ancestor-or-self::foo:bar", LocationPath.class);
        assertXPathExpression("namespace::foo:bar", LocationPath.class);
        assertXPathExpression("preceding::foo:bar", LocationPath.class);
        assertXPathExpression("preceding-sibling::foo:bar", LocationPath.class);
        assertXPathExpression("following::foo:bar", LocationPath.class);
        assertXPathExpression("following-sibling::foo:bar", LocationPath.class);
    }
    
    public void testLocationPathNodeTest() {
        assertXPathExpression("node()", LocationPath.class);
        assertXPathExpression("text()", LocationPath.class);
        assertXPathExpression("comment()", LocationPath.class);
        assertXPathExpression("processing-instruction()", LocationPath.class);
        assertXPathExpression("processing-instruction('test')", LocationPath.class);
    }
    
    public void testVariableReference() {
        assertXPathExpression("$x", VariableReference.class);
        assertXPathExpression("$x:y", VariableReference.class);
    }
    
    /**
     * Compiles the xpath into an Expression, checks the expression
     * class, converts the expression to string and checks that the string
     * matches the expected one.
     */
    private void assertXPathExpression(String xpath, Class expectedClass, String expected) {
        JXPathCompiledExpression expression = (JXPathCompiledExpression) JXPathContext.compile(xpath);
        
        assertEquals("Expression class for " + xpath, expectedClass, expression.getExpression().getClass());
        assertEquals("Expression toString() for " + xpath, expected, expression.getExpression().toString());
    }
    
    private void assertXPathExpression(String xpath, Class expectedClass) {
        assertXPathExpression(xpath, expectedClass, xpath);
    }
    
}