dwinterfeldt 01/10/16 08:52:12
Added: src/share/org/apache/struts/taglib/logic
MessagesPresentTag.java MessagesNotPresentTag.java
Log:
Logic tags for checking if a message is present in general or for a specific
property. They retrieve an object from request scope just like the html:errors and
html:messages tags.
Revision Changes Path
1.1
jakarta-struts/src/share/org/apache/struts/taglib/logic/MessagesPresentTag.java
Index: MessagesPresentTag.java
===================================================================
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Struts", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
* ITS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.struts.taglib.logic;
import java.util.Iterator;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
//import javax.servlet.jsp.PageContext;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.util.RequestUtils;
/**
* Evalute to <code>true</code> if an <code>ActionMessages</code> class or a
* class that can be converted to an <code>ActionMessages</code> class is in
* request scope under the specified key and there is at least one message in the
* class or for the property specified.
*
* @author David Winterfeldt
*/
public class MessagesPresentTag extends ConditionalTagBase {
/**
* If this is set to 'true', then the <code>Action.MESSAGE_KEY</code> will
* be used to retrieve the messages from scope.
*/
protected String message = null;
public MessagesPresentTag() {
name = Action.ERROR_KEY;
}
public String getMessage() {
return (this.message);
}
public void setMessage(String message) {
this.message = message;
}
/**
* Evaluate the condition that is being tested by this particular tag,
* and return <code>true</code> if the nested body content of this tag
* should be evaluated, or <code>false</code> if it should be skipped.
* This method must be implemented by concrete subclasses.
*
* @exception JspException if a JSP exception occurs
*/
protected boolean condition() throws JspException {
return (condition(true));
}
/**
* Evaluate the condition that is being tested by this particular tag,
* and return <code>true</code> if there is at least one message in the
* class or for the property specified.
* This method must be implemented by concrete subclasses.
*
* @param desired Desired outcome for a true result
*
* @exception JspException if a JSP exception occurs
*/
protected boolean condition(boolean desired) throws JspException {
ActionMessages am = null;
if (message != null && "true".equalsIgnoreCase(message))
name = Action.MESSAGE_KEY;
// Evaluate the presence of the specified value
boolean bMessages = false;
try {
am = RequestUtils.getActionMessages(pageContext, name);
} catch(JspException e) {
RequestUtils.saveException(pageContext, e);
throw e;
}
Iterator iterator = null;
if (property == null)
iterator = am.get();
else
iterator = am.get(property);
if (iterator.hasNext())
bMessages = true;
return (bMessages == desired);
}
/**
* Release all allocated resources.
*/
public void release() {
super.release();
name = Action.ERROR_KEY;
message = null;
}
}
1.1
jakarta-struts/src/share/org/apache/struts/taglib/logic/MessagesNotPresentTag.java
Index: MessagesNotPresentTag.java
===================================================================
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Struts", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
* ITS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.struts.taglib.logic;
import javax.servlet.jsp.JspException;
/**
* Evalute the nested body content of this tag if the specified value
* is not present for this request.
*
* @author David Winterfeldt
*/
public class MessagesNotPresentTag extends MessagesPresentTag {
// ------------------------------------------------------ Protected Methods
/**
* Evaluate the condition that is being tested by this particular tag,
* and return <code>true</code> if the nested body content of this tag
* should be evaluated, or <code>false</code> if it should be skipped.
* This method must be implemented by concrete subclasses.
*
* @exception JspException if a JSP exception occurs
*/
protected boolean condition() throws JspException {
return (condition(false));
}
}
