Package org.apache.jasper.runtime
Class TagHandlerPool
- java.lang.Object
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- org.apache.jasper.runtime.TagHandlerPool
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- Direct Known Subclasses:
PerThreadTagHandlerPool
public class TagHandlerPool extends Object
Pool of tag handlers that can be reused.- Author:
- Jan Luehe
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Field Summary
Fields Modifier and Type Field Description static String
OPTION_MAXSIZE
static String
OPTION_TAGPOOL
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Constructor Summary
Constructors Constructor Description TagHandlerPool()
Constructs a tag handler pool with the default capacity.TagHandlerPool(int capacity)
Deprecated.Use static getTagHandlerPool
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description <T extends javax.servlet.jsp.tagext.JspTag>
javax.servlet.jsp.tagext.JspTagget(Class<T> handlerClass)
Gets the next available tag handler from this tag handler pool, instantiating one if this tag handler pool is empty.protected static String
getOption(javax.servlet.ServletConfig config, String name, String defaultV)
static TagHandlerPool
getTagHandlerPool(javax.servlet.ServletConfig config)
protected void
init(javax.servlet.ServletConfig config)
void
release()
Calls the release() method of all available tag handlers in this tag handler pool.void
reuse(javax.servlet.jsp.tagext.JspTag 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.
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Field Detail
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OPTION_TAGPOOL
public static final String OPTION_TAGPOOL
- See Also:
- Constant Field Values
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OPTION_MAXSIZE
public static final String OPTION_MAXSIZE
- See Also:
- Constant Field Values
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Constructor Detail
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TagHandlerPool
public TagHandlerPool()
Constructs a tag handler pool with the default capacity.
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TagHandlerPool
public TagHandlerPool(int capacity)
Deprecated.Use static getTagHandlerPoolConstructs a tag handler pool with the given capacity.- Parameters:
capacity
- Tag handler pool capacity
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Method Detail
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getTagHandlerPool
public static TagHandlerPool getTagHandlerPool(javax.servlet.ServletConfig config)
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init
protected void init(javax.servlet.ServletConfig config)
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get
public <T extends javax.servlet.jsp.tagext.JspTag> javax.servlet.jsp.tagext.JspTag get(Class<T> 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
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reuse
public void reuse(javax.servlet.jsp.tagext.JspTag 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
- JspTag handler to add to this tag handler pool
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release
public void release()
Calls the release() method of all available tag handlers in this tag handler pool.
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