| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed 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; |
| |
| /** |
| * 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: Attribute.java,v 1.4 2004/03/05 13:02:07 bdelacretaz Exp $ |
| */ |
| 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 |
| * </ul> |
| * |
| * @return the value of the Attribute as a boolean |
| * |
| * @exception IllegalArgumentException if the value does not |
| * represent a boolean |
| */ |
| |
| public boolean getValueAsBoolean() { |
| boolean rvalue = false; |
| |
| if (_value.equalsIgnoreCase("t") || _value.equalsIgnoreCase("y") |
| || _value.equalsIgnoreCase("yes") |
| || _value.equalsIgnoreCase("true")) { |
| rvalue = true; |
| } else if (_value.equalsIgnoreCase("f") || _value.equalsIgnoreCase("n") |
| || _value.equalsIgnoreCase("no") |
| || _value.equalsIgnoreCase("false")) { |
| rvalue = false; |
| } else { |
| throw new IllegalArgumentException( |
| "Value [" + _value + "] does not represent a boolean value"); |
| } |
| return rvalue; |
| } |
| } // end public class Attribute |