001package ball.util.ant.types;
002/*-
003 * ##########################################################################
004 * Utilities
005 * %%
006 * Copyright (C) 2008 - 2022 Allen D. Ball
007 * %%
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * You may obtain a copy of the License at
011 *
012 *      http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 * ##########################################################################
020 */
021import ball.util.Factory;
022import ball.util.ant.taskdefs.NotNull;
023import java.beans.ConstructorProperties;
024import org.apache.tools.ant.BuildException;
025
026/**
027 * Class to provide a typed name-value (attribute) for
028 * {@link.uri http://ant.apache.org/ Ant} {@link org.apache.tools.ant.Task}
029 * implementations.
030 *
031 * {@bean.info}
032 *
033 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball}
034 */
035public class TypedAttributeType extends StringAttributeType {
036    private String type = String.class.getName();
037
038    /**
039     * @param   name            The attribute name.
040     */
041    @ConstructorProperties({ "name" })
042    public TypedAttributeType(String name) { super(name); }
043
044    /**
045     * No-argument constructor.
046     */
047    public TypedAttributeType() { this(null); }
048
049    @NotNull
050    public String getType() { return type; }
051    public void setType(String type) { this.type = type; }
052
053    public Object getTypedValue() throws BuildException {
054        return getTypedValue(getClass().getClassLoader());
055    }
056
057    public Object getTypedValue(ClassLoader loader) throws BuildException {
058        Object object = null;
059
060        try {
061            Class<?> type = Class.forName(getType(), false, loader);
062            Factory<?> factory = new Factory<>(type);
063
064            object = factory.getInstance(getValue());
065        } catch (BuildException exception) {
066            throw exception;
067        } catch (RuntimeException exception) {
068            throw exception;
069        } catch (Exception exception) {
070            throw new BuildException(exception);
071        }
072
073        return object;
074    }
075}