=== added file 'dhis-2/dhis-support/dhis-support-system/src/main/java/org/hisp/dhis/system/util/ReflectionUtils.java' --- dhis-2/dhis-support/dhis-support-system/src/main/java/org/hisp/dhis/system/util/ReflectionUtils.java 1970-01-01 00:00:00 +0000 +++ dhis-2/dhis-support/dhis-support-system/src/main/java/org/hisp/dhis/system/util/ReflectionUtils.java 2009-11-09 16:57:41 +0000 @@ -0,0 +1,143 @@ +package org.hisp.dhis.system.util; + +/* + * Copyright (c) 2004-2007, University of Oslo + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * * Neither the name of the HISP project nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +import java.lang.reflect.Method; +import java.util.Collection; + +/** + * @author Lars Helge Overland + */ +public class ReflectionUtils +{ + /** + * Invokes method getId() for this object and returns the return value. An int + * return type is expected. If the operation fails -1 is returned. + * + * @param object object to call getId() on. + * @return The identifier. + */ + public static int getId( Object object ) + { + try + { + Method method = object.getClass().getMethod( "getId" ); + + return (Integer) method.invoke( object ); + } + catch ( Exception ex ) + { + return -1; + } + } + + /** + * Fetch a property off the object. Returns null if the operation fails. + * + * @param object the object. + * @param property name of the property to get. + * @return the value of the property or null. + */ + public static String getProperty( Object object, String property ) + { + try + { + property = property.substring( 0, 1 ).toUpperCase() + property.substring( 1, property.length() ); + + Method method = object.getClass().getMethod( "get" + property ); + + return (String) method.invoke( object ); + } + catch ( Exception ex ) + { + return null; + } + } + + /** + * Sets a property for the supplied object. Throws an UnsupportedOperationException + * if the operation fails. + * + * @param object Object to modify + * @param name Name of property to set + * @param value Value the property will be set to + */ + public static void setProperty( Object object, String name, String value ) + { + Object[] arguments = new Object[] { value }; + + Class[] parameterTypes = new Class[] { String.class }; + + if ( name.length() > 0 ) + { + name = "set" + name.substring( 0, 1 ).toUpperCase() + name.substring( 1, name.length() ); + + try + { + Method concatMethod = object.getClass().getMethod( name, parameterTypes ); + + concatMethod.invoke( object, arguments ); + } + catch ( Exception ex ) + { + throw new UnsupportedOperationException( "Failed to set property", ex ); + } + } + } + + /** + * Returns the name of the class that the object is an instance of + * org.hisp.dhis.indicator.Indicactor returns Indicator. + * + * @param object object to determine className for. + * @return String containing the class name. + */ + public static String getClassName( Object object ) + { + return object.getClass().getSimpleName(); + } + + /** + * Test whether the object is an array or a Collection. + * + * @param value the object. + * @return true if the object is an array or a Collection, false otherwise. + */ + public static boolean isCollection( Object value ) + { + if ( value != null ) + { + if ( value.getClass().isArray() || value instanceof Collection ) + { + return true; + } + } + + return false; + } +} === added file 'dhis-2/dhis-support/dhis-support-system/src/test/java/org/hisp/dhis/system/util/ReflectionUtilsTest.java' --- dhis-2/dhis-support/dhis-support-system/src/test/java/org/hisp/dhis/system/util/ReflectionUtilsTest.java 1970-01-01 00:00:00 +0000 +++ dhis-2/dhis-support/dhis-support-system/src/test/java/org/hisp/dhis/system/util/ReflectionUtilsTest.java 2009-11-09 16:57:41 +0000 @@ -0,0 +1,105 @@ +package org.hisp.dhis.system.util; + +/* + * Copyright (c) 2004-2007, University of Oslo + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * * Neither the name of the HISP project nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +import static junit.framework.Assert.assertEquals; +import static junit.framework.Assert.assertFalse; +import static junit.framework.Assert.assertNull; +import static junit.framework.Assert.assertTrue; +import static org.hisp.dhis.system.util.ReflectionUtils.getClassName; +import static org.hisp.dhis.system.util.ReflectionUtils.getId; +import static org.hisp.dhis.system.util.ReflectionUtils.getProperty; +import static org.hisp.dhis.system.util.ReflectionUtils.isCollection; +import static org.hisp.dhis.system.util.ReflectionUtils.setProperty; + +import java.util.ArrayList; +import java.util.List; + +import org.hisp.dhis.dataelement.DataElement; +import org.junit.Before; +import org.junit.Test; + +/** + * @author Lars Helge Overland + */ +public class ReflectionUtilsTest +{ + private DataElement dataElementA; + + @Before + public void before() + { + dataElementA = new DataElement(); + dataElementA.setId( 8 ); + dataElementA.setName( "NameA" ); + dataElementA.setAggregationOperator( "Sum" ); + } + + + @Test + public void testGetId() + { + assertEquals( 8, getId( dataElementA ) ); + } + + @Test + public void testGetProperty() + { + assertEquals( "NameA", getProperty( dataElementA, "name" ) ); + assertNull( getProperty( dataElementA, "color" ) ); + } + + @Test + public void testSetProperty() + { + setProperty( dataElementA, "shortName", "ShortNameA" ); + + assertEquals( "ShortNameA", dataElementA.getShortName() ); + } + + @Test( expected=UnsupportedOperationException.class ) + public void testSetPropertyException() + { + setProperty( dataElementA, "color", "Blue" ); + } + + @Test + public void testGetClassName() + { + assertEquals( "DataElement", getClassName( dataElementA ) ); + } + + @Test + public void testIsCollection() + { + List list = new ArrayList(); + + assertTrue( isCollection( list ) ); + assertFalse( isCollection( dataElementA ) ); + } +}