org.apache.myfaces.view.facelets
Class StateWriter
java.lang.Object
java.io.Writer
org.apache.myfaces.view.facelets.StateWriter
- All Implemented Interfaces:
- Closeable, Flushable, Appendable
public final class StateWriter
- extends Writer
A class for handling state insertion. Content is written directly to "out" until an attempt to write state; at that
point, it's redirected into a buffer that can be picked through in theory, this buffer should be very small, since it
only needs to be enough to contain all the content after the close of the first (and, hopefully, only) form.
Potential optimizations:
- If we created a new FastWriter at each call to writingState(), and stored a List of them, then we'd know that
state tokens could only possibly be near the start of each buffer (and might not be there at all). (There might be a
close-element before the state token). Then, we'd only need to check the start of the buffer for the state token; if
it's there, write out the real state, then blast the rest of the buffer out. This wouldn't even require toString(),
which for large buffers is expensive. However, this optimization is only going to be especially meaningful for the
multi-form case.
- More of a FastWriter optimization than a StateWriter, but: it is far faster to create a set of small 1K buffers
than constantly reallocating one big buffer.
- Version:
- $Id: StateWriter.java,v 1.2 2008/07/13 19:01:40 rlubke Exp $
- Author:
- Adam Winer
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
StateWriter
public StateWriter(Writer initialOut,
int initialSize)
getCurrentInstance
public static StateWriter getCurrentInstance()
writingState
public void writingState()
- Mark that state is about to be written. Contrary to what you'd expect, we cannot and should not assume that this
location is really going to have state; it is perfectly legit to have a ResponseWriter that filters out content,
and ignores an attempt to write out state at this point. So, we have to check after the fact to see if there
really are state markers.
isStateWritten
public boolean isStateWritten()
writingStateWithoutWrapper
public void writingStateWithoutWrapper()
isStateWrittenWithoutWrapper
public boolean isStateWrittenWithoutWrapper()
close
public void close()
throws IOException
- Specified by:
close
in interface Closeable
- Specified by:
close
in class Writer
- Throws:
IOException
flush
public void flush()
throws IOException
- Specified by:
flush
in interface Flushable
- Specified by:
flush
in class Writer
- Throws:
IOException
write
public void write(char[] cbuf,
int off,
int len)
throws IOException
- Specified by:
write
in class Writer
- Throws:
IOException
write
public void write(char[] cbuf)
throws IOException
- Overrides:
write
in class Writer
- Throws:
IOException
write
public void write(int c)
throws IOException
- Overrides:
write
in class Writer
- Throws:
IOException
write
public void write(String str,
int off,
int len)
throws IOException
- Overrides:
write
in class Writer
- Throws:
IOException
write
public void write(String str)
throws IOException
- Overrides:
write
in class Writer
- Throws:
IOException
getAndResetBuffer
public String getAndResetBuffer()
release
public void release()
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