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## org.apache.velocity.runtime.directive
Class VelocimacroProxy

    java.lang.Object
      org.apache.velocity.runtime.directive.Directive
          org.apache.velocity.runtime.directive.VelocimacroProxy

All Implemented Interfaces:
  Cloneable, DirectiveConstants

public class VelocimacroProxy
extends Directive

VelocimacroProxy.java a proxy Directive-derived object to fit with the current directive system

Version:
  $Id: VelocimacroProxy.java 898032 2010-01-11 19:51:03Z nbubna $
Author:
  Geir Magnusson Jr.

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
`VelocimacroProxy()`

Method Summary
`void` | `checkArgs(InternalContextAdapter context, Node node, boolean hasBody)` check if we are calling this macro with the right number of arguments.
`String` | `getName()` Return name of this Velocimacro.
`int` | `getNumArgs()` returns the number of ars needed for this VM
`int` | `getType()` Velocimacros are always LINE type directives.
`void` | `init(RuntimeServices rs)` Initialize members of VelocimacroProxy.
`boolean` | `render(InternalContextAdapter context, Writer writer, Node node)` How this directive is to be rendered
`boolean` | `render(InternalContextAdapter context, Writer writer, Node node, Renderable body)` Renders the macro using the context.
`void` | `setArgArray(String[] arr)` sets the array of arguments specified in the macro definition
`void` | `setName(String name)` sets the directive name of this VM
`void` | `setNodeTree(SimpleNode tree)`

Methods inherited from class org.apache.velocity.runtime.directive.Directive
`getColumn, getLine, getScopeName, getTemplateName, init, isScopeProvided, makeScope, postRender, preRender, setLocation, setLocation`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### VelocimacroProxy

    public VelocimacroProxy()

Method Detail

### getName

    public String getName()

  Return name of this Velocimacro.

  Specified by:
    `getName` in class `Directive`
  Returns:
    The name of this Velocimacro.

### getType

    public int getType()

  Velocimacros are always LINE type directives.

  Specified by:
    `getType` in class `Directive`
  Returns:
    The type of this directive.

### setName

    public void setName(String name)

  sets the directive name of this VM

  Parameters:
    `name` -

### setArgArray

    public void setArgArray(String[] arr)

  sets the array of arguments specified in the macro definition

  Parameters:
    `arr` -

### setNodeTree

    public void setNodeTree(SimpleNode tree)

  Parameters:
    `tree` -

### getNumArgs

    public int getNumArgs()

  returns the number of ars needed for this VM

  Returns:
    The number of ars needed for this VM

### render

    public boolean render(InternalContextAdapter context,
                          Writer writer,
                          Node node)
                   throws IOException,
                          MethodInvocationException,
                          MacroOverflowException

  Description copied from class: `Directive`
  How this directive is to be rendered

  Specified by:
    `render` in class `Directive`
  Parameters:
    `context` -
    `writer` -
    `node` -
  Returns:
    True if the directive rendered successfully.
  Throws:
    `IOException`
    `MethodInvocationException`
    `MacroOverflowException`

### render

    public boolean render(InternalContextAdapter context,
                          Writer writer,
                          Node node,
                          Renderable body)
                   throws IOException,
                          MethodInvocationException,
                          MacroOverflowException

  Renders the macro using the context.

  Parameters:
    `context` - Current rendering context
    `writer` - Writer for output
    `node` - AST that calls the macro
  Returns:
    True if the directive rendered successfully.
  Throws:
    `IOException`
    `MethodInvocationException`
    `MacroOverflowException`

### init

    public void init(RuntimeServices rs)

  Initialize members of VelocimacroProxy. called from MacroEntry

### checkArgs

    public void checkArgs(InternalContextAdapter context,
                          Node node,
                          boolean hasBody)

  check if we are calling this macro with the right number of arguments. If we are not, and strictArguments is active, then throw TemplateInitException. This method is called during macro render, so it must be thread safe.

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