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Class BodyContent

java.lang.Object  |  +--java.io.Writer        |        +--javax.servlet.jsp.JspWriter              |              +--javax.servlet.jsp.tagext.BodyContent

public abstract classBodyContent
extendsJspWriter

An encapsulation of the evaluation of the body of an action so it is available to a tag handler. BodyContent is a subclass of JspWriter.

Note that the content of BodyContent is the result of evaluation, so it will not contain actions and the like, but the result of their invocation.

BodyContent has methods to convert its contents into a String, to read its contents, and to clear the contents.

The buffer size of a BodyContent object is unbounded. A BodyContent object cannot be in autoFlush mode. It is not possible to invoke flush on a BodyContent object, as there is no backing stream.

Instances of BodyContent are created by invoking the pushBody and popBody methods of the PageContext class. A BodyContent is enclosed within another JspWriter (maybe another BodyContent object) following the structure of their associated actions.

A BodyContent is made available to a BodyTag through a setBodyContent() call. The tag handler can use the object until after the call to doEndTag().


Fields inherited from class javax.servlet.jsp.JspWriter
autoFlush,bufferSize,DEFAULT_BUFFER,NO_BUFFER,UNBOUNDED_BUFFER
 
Fields inherited from class java.io.Writer
lock
 
BodyContent(JspWriter e)
          Protected constructor.
 
clearBody()
          Clear the body without throwing any exceptions.
flush()
          Redefined flush() so it is not legal.
getEnclosingWriter()
          Get the enclosing JspWriter.
getReader()
          Return the value of this BodyContent as a Reader.
getString()
          Return the value of the BodyContent as a String.
writeOut(java.io.Writer out)
          Write the contents of this BodyContent into a Writer.
 
Methods inherited from class javax.servlet.jsp.JspWriter
clear,clearBuffer,close,getBufferSize,getRemaining,isAutoFlush,newLine,print,print,print,print,print,print,print,print,print,println,println,println,println,println,println,println,println,println,println
 
Methods inherited from class java.io.Writer
write, write, write, write, write
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

BodyContent

protectedBodyContent(JspWriter e)
Protected constructor. Unbounded buffer, no autoflushing.

flush

public voidflush()           throws java.io.IOException
Redefined flush() so it is not legal.

It is not valid to flush a BodyContent because there is no backing stream behind it.

Overrides:
flush in classJspWriter
Following copied from class:javax.servlet.jsp.JspWriter
Throws:
java.io.IOException - If an I/O error occurs

clearBody

public voidclearBody()
Clear the body without throwing any exceptions.

getReader

public abstract java.io.ReadergetReader()
Return the value of this BodyContent as a Reader.
Returns:
the value of this BodyContent as a Reader

getString

public abstract java.lang.StringgetString()
Return the value of the BodyContent as a String.
Returns:
the value of the BodyContent as a String

writeOut

public abstract voidwriteOut(java.io.Writer out)                       throws java.io.IOException
Write the contents of this BodyContent into a Writer. Subclasses may optimize common invocation patterns.
Parameters:
out - The writer into which to place the contents of this body evaluation

getEnclosingWriter

publicJspWritergetEnclosingWriter()
Get the enclosing JspWriter.
Returns:
the enclosing JspWriter passed at construction time

         


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