org.apache.cayenne.access.jdbc
Class ChainDirective

java.lang.Object
  extended by org.apache.velocity.runtime.directive.Directive
      extended by org.apache.cayenne.access.jdbc.ChainDirective
All Implemented Interfaces:
Cloneable, org.apache.velocity.runtime.directive.DirectiveConstants

public class ChainDirective
extends org.apache.velocity.runtime.directive.Directive

A custom Velocity directive to conditionally join a number of chunks. Usage of chain is the following:

 #chain(operator) - e.g. #chain(' AND ')
 #chain(operator prefix) - e.g. #chain(' AND ' 'WHERE ')

operator (e.g. AND, OR, etc.) is used to join chunks that are included in a chain. prefix is inserted if a chain contains at least one chunk.

Since:
1.1

Field Summary
 
Fields inherited from class org.apache.velocity.runtime.directive.Directive
rsvc
 
Fields inherited from interface org.apache.velocity.runtime.directive.DirectiveConstants
BLOCK, LINE
 
Constructor Summary
ChainDirective()
           
 
Method Summary
 String getName()
           
 int getType()
           
 boolean render(org.apache.velocity.context.InternalContextAdapter context, Writer writer, org.apache.velocity.runtime.parser.node.Node node)
           
 
Methods inherited from class org.apache.velocity.runtime.directive.Directive
getColumn, getLine, init, setLocation
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ChainDirective

public ChainDirective()
Method Detail

getName

public String getName()
Specified by:
getName in class org.apache.velocity.runtime.directive.Directive

getType

public int getType()
Specified by:
getType in class org.apache.velocity.runtime.directive.Directive

render

public boolean render(org.apache.velocity.context.InternalContextAdapter context,
                      Writer writer,
                      org.apache.velocity.runtime.parser.node.Node node)
               throws IOException,
                      org.apache.velocity.exception.ResourceNotFoundException,
                      org.apache.velocity.exception.ParseErrorException,
                      org.apache.velocity.exception.MethodInvocationException
Specified by:
render in class org.apache.velocity.runtime.directive.Directive
Throws:
IOException
org.apache.velocity.exception.ResourceNotFoundException
org.apache.velocity.exception.ParseErrorException
org.apache.velocity.exception.MethodInvocationException


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