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Java example source code file (Test4918902.java)

This example Java source code file (Test4918902.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bean, child2, child3, child4, class, error, grandchild, ichild1, ichild2, ichild3, indexedpropertydescriptor, iparent, javabean, parent, string, test4918902

The Test4918902.java Java example source code

/*
 * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 4918902
 * @summary Tests search the most specific methods for PropertyDescriptors
 * @author Mark Davidson
 */

import java.beans.PropertyDescriptor;
import java.beans.IndexedPropertyDescriptor;

public class Test4918902 {
    public static void main(String[] args) {
        testPropertyDescriptor(Child1.class, Child1.class, Parent.class);
        testPropertyDescriptor(Child2.class, Parent.class, Child2.class);
        testPropertyDescriptor(Child3.class, Child3.class, Child3.class);
        testPropertyDescriptor(Child4.class, Parent.class, Parent.class);

        testPropertyDescriptor(Grandchild.class, Child3.class, Child3.class);

        testIndexedPropertyDescriptor(IChild1.class, IChild1.class, IChild1.class);
        testIndexedPropertyDescriptor(IChild2.class, IChild2.class, IParent.class);
        testIndexedPropertyDescriptor(IChild3.class, IParent.class, IChild3.class);
        testIndexedPropertyDescriptor(IChild4.class, IParent.class, IParent.class);
    }

    private static void testPropertyDescriptor(Class type, Class read, Class write) {
        PropertyDescriptor pd = BeanUtils.getPropertyDescriptor(type, "foo");
        if (!read.equals(pd.getReadMethod().getDeclaringClass())) {
            throw new Error("unexpected read method: " + pd.getReadMethod());
        }
        if (!write.equals(pd.getWriteMethod().getDeclaringClass())) {
            throw new Error("unexpected write method: " + pd.getWriteMethod());
        }
    }

    private static void testIndexedPropertyDescriptor(Class type, Class read, Class write) {
        IndexedPropertyDescriptor ipd = BeanUtils.getIndexedPropertyDescriptor(type, "foo");
        if (!read.equals(ipd.getIndexedReadMethod().getDeclaringClass())) {
            throw new Error("unexpected read method: " + ipd.getIndexedReadMethod());
        }
        if (!write.equals(ipd.getIndexedWriteMethod().getDeclaringClass())) {
            throw new Error("unexpected write method: " + ipd.getIndexedWriteMethod());
        }
    }

    // simple properties
    public static class Parent {
        public String getFoo() {
            return null;
        }

        public void setFoo(String str) {
        }
    }

    // getter has been overriden
    public static class Child1 extends Parent {
        public String getFoo() {
            return null;
        }
    }

    // setter has been overriden
    public static class Child2 extends Parent {
        public void setFoo(String str) {
        }
    }

    // both methods have been overriden
    public static class Child3 extends Parent {
        public void setFoo(String str) {
        }

        public String getFoo() {
            return null;
        }
    }

    // methods should be taken from superclass
    public static class Child4 extends Parent {
    }

    // methods should be taken from superclass
    public static class Grandchild extends Child3 {
    }

    // indexed properties
    public static class IParent {
        public String getFoo(int i) {
            return null;
        }

        public void setFoo(int i, String str) {
        }
    }

    // both methods have been overriden
    public static class IChild1 extends IParent {
        public void setFoo(int i, String str) {
        }

        public String getFoo(int i) {
            return null;
        }
    }

    // getter has been overriden
    public static class IChild2 extends IParent {
        public String getFoo(int i) {
            return null;
        }
    }

    // setter has been overriden
    public static class IChild3 extends IParent {
        public void setFoo(int i, String str) {
        }
    }

    // methods should be taken from superclass
    public static class IChild4 extends IParent {
    }
}

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