org.apache.jasper.runtime
Class TagHandlerPool

java.lang.Object
  org.apache.jasper.runtime.TagHandlerPool

Direct Known Subclasses:

PerThreadTagHandlerPool

public class TagHandlerPool
extends java.lang.Object

Pool of tag handlers that can be reused.

Author:

Jan Luehe

OPTION_TAGPOOL

public static final java.lang.String OPTION_TAGPOOL

See Also:

Constant Field Values

OPTION_MAXSIZE

public static final java.lang.String OPTION_MAXSIZE

See Also:

Constant Field Values

annotationProcessor

protected AnnotationProcessor annotationProcessor

TagHandlerPool

public TagHandlerPool()

Constructs a tag handler pool with the default capacity.

TagHandlerPool

public TagHandlerPool(int capacity)

Deprecated. Use static getTagHandlerPool

Constructs a tag handler pool with the given capacity.

Parameters:

capacity - Tag handler pool capacity

getTagHandlerPool

public static TagHandlerPool getTagHandlerPool(javax.servlet.ServletConfig config)

init

protected void init(javax.servlet.ServletConfig config)

get

public javax.servlet.jsp.tagext.Tag get(java.lang.Class handlerClass)
                                 throws javax.servlet.jsp.JspException

Gets the next available tag handler from this tag handler pool, instantiating one if this tag handler pool is empty.

Parameters:

handlerClass - Tag handler class

Returns:

Reused or newly instantiated tag handler

Throws:

javax.servlet.jsp.JspException - if a tag handler cannot be instantiated

reuse

public void reuse(javax.servlet.jsp.tagext.Tag handler)

Adds the given tag handler to this tag handler pool, unless this tag handler pool has already reached its capacity, in which case the tag handler's release() method is called.

Parameters:

handler - Tag handler to add to this tag handler pool

release

public void release()

Calls the release() method of all available tag handlers in this tag handler pool.

getOption

protected static java.lang.String getOption(javax.servlet.ServletConfig config,
                                            java.lang.String name,
                                            java.lang.String defaultV)