| /* |
| * 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.cocoon.components.elementprocessor.types; |
| |
| import org.apache.commons.lang.BooleanUtils; |
| |
| /** |
| * Encapsulation of a single XML element attribute in a way that |
| * shields the consumer from the data's XML origins. |
| * |
| * @author Marc Johnson (marc_johnson27591@hotmail.com) |
| * @version CVS $Id$ |
| */ |
| public class Attribute |
| { |
| private String _name; |
| private String _value; |
| |
| /** |
| * Constructor |
| * |
| * @param name the name of the Attribute, the left hand side of |
| * the '=' of an XML element's attribute. |
| * @param value the value of the Attribute, the right hand side of |
| * the '=' of an XML element's attribute. |
| * |
| * @exception IllegalArgumentException is thrown if name is null |
| * or empty, or if value is null. |
| */ |
| |
| public Attribute(final String name, final String value) { |
| if ((name == null) || (name.length() == 0)) { |
| throw new IllegalArgumentException( |
| "Attribute name is null or empty"); |
| } |
| if (value == null) { |
| throw new IllegalArgumentException("Attribute value is null"); |
| } |
| _name = name; |
| _value = value; |
| } |
| |
| /** |
| * Get the name of the Attribute. |
| * |
| * @return the name of the Attribute |
| */ |
| |
| public String getName() { |
| return _name; |
| } |
| |
| /** |
| * Get the value of the Attribute as a String. |
| * |
| * @return the value of the Attribute as a String |
| */ |
| |
| public String getValue() { |
| return _value; |
| } |
| |
| /** |
| * A convenience method to get the value of the Attribute as an |
| * int. |
| * |
| * @return the value of the Attribute as an int |
| * |
| * @exception NumberFormatException if the value is not an int |
| */ |
| |
| public int getValueAsInt() { |
| return Integer.parseInt(_value); |
| } |
| |
| /** |
| * A convenience method to get the value of the Attribute as a |
| * short. |
| * |
| * @return the value of the Attribute as a short |
| * |
| * @exception NumberFormatException if the value is not a short |
| */ |
| |
| public short getValueAsShort() { |
| return Short.parseShort(_value); |
| } |
| |
| /** |
| * A convenience method to get the value of the Attribute as a long. |
| * |
| * @return the value of the Attribute as a long |
| * |
| * @exception NumberFormatException if the value is not a long |
| */ |
| |
| public long getValueAsLong() { |
| return Long.parseLong(_value); |
| } |
| |
| /** |
| * A convenience method to get the value of the attribute as a |
| * boolean. Understands these value strings in a case-insensitive |
| * fashion: |
| * <ul> |
| * <li>t/f |
| * <li>true/false |
| * <li>y/n |
| * <li>yes/no |
| * <li>on/off |
| * </ul> |
| * |
| * @return the value of the Attribute as a boolean |
| * |
| * @exception IllegalArgumentException if the value does not |
| * represent a boolean |
| */ |
| |
| public boolean getValueAsBoolean() { |
| // Match case for: true, false, yes, no, on, off. |
| Boolean rvalue = BooleanUtils.toBooleanObject(_value); |
| if (rvalue != null) { |
| return rvalue.booleanValue(); |
| } |
| // Lets try with "t", "f" |
| try { |
| rvalue = BooleanUtils.toBooleanObject(_value, "t", "f", null); |
| } catch (IllegalArgumentException iae) { |
| rvalue = null; |
| } |
| if (rvalue != null) { |
| return rvalue.booleanValue(); |
| } |
| // Try now "y", "n" |
| try { |
| rvalue = BooleanUtils.toBooleanObject(_value, "y", "n", null); |
| } catch (IllegalArgumentException iae) { |
| rvalue = null; |
| } |
| if (rvalue != null) { |
| return rvalue.booleanValue(); |
| } else { |
| throw new IllegalArgumentException( |
| "Value [" + _value + "] does not represent a boolean value"); |
| } |
| } |
| } // end public class Attribute |