org.codehaus.groovy.grails.web.util
Class GrailsPrintWriter

java.lang.Object
  java.io.Writer
      java.io.PrintWriter
          org.codehaus.groovy.grails.web.util.GrailsPrintWriter

All Implemented Interfaces:

Closeable, Flushable, Appendable

Direct Known Subclasses:

FastStringWriter, GrailsRoutablePrintWriter, GSPResponseWriter

public class GrailsPrintWriter
extends PrintWriter

PrintWriter implementation that doesn't have synchronization. null object references are ignored in print methods (nothing gets printed)

Author:

Lari Hotari, Sagire Software Oy

Field Summary

protected Writer	out
protected boolean	trouble

Fields inherited from class java.io.Writer

lock

Constructor Summary

GrailsPrintWriter(Writer out)

Method Summary

PrintWriter	append(char c)
PrintWriter	append(CharSequence csq)
PrintWriter	append(CharSequence csq, int start, int end)
boolean	checkError() Flush the stream if it's not closed and check its error state.
protected Object	clone()
void	flush() Flush the stream.
Writer	getFinalTarget()
Writer	getOut()
protected void	handleIOException(IOException e)
boolean	isFinalTargetHere()
GrailsPrintWriter	leftShift(Object value) Provides Groovy << left shift operator, but intercepts call to make sure nulls are converted to "" strings
void	print(boolean b) delegate methods, not synchronized
void	print(char c)
void	print(char[] s)
void	print(double d)
void	print(float f)
void	print(int i)
void	print(long l)
void	print(Object obj) Print an object.
void	print(String s) Print a string.
void	println()
void	println(boolean b)
void	println(char c)
void	println(char[] c)
void	println(double d)
void	println(float f)
void	println(int i)
void	println(long l)
void	println(Object o)
void	println(String s)
void	setFinalTargetHere(boolean finalTargetHere)
void	write(char[] buf)
void	write(char[] buf, int off, int len) Write a portion of an array of characters.
void	write(int c) Write a single character.
void	write(String s) Writes a string.
void	write(String s, int off, int len) Write a portion of a string.

Methods inherited from class java.io.PrintWriter

close, format, format, printf, printf, setError

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

trouble

protected boolean trouble

out

protected Writer out

Constructor Detail

GrailsPrintWriter

public GrailsPrintWriter(Writer out)

Method Detail

getOut

public Writer getOut()

isFinalTargetHere

public boolean isFinalTargetHere()

setFinalTargetHere

public void setFinalTargetHere(boolean finalTargetHere)

getFinalTarget

public Writer getFinalTarget()

leftShift

public GrailsPrintWriter leftShift(Object value)
                            throws IOException

Provides Groovy << left shift operator, but intercepts call to make sure nulls are converted to "" strings

Parameters:

value - The value

Returns:

Returns this object

Throws:

IOException

checkError

public boolean checkError()

Flush the stream if it's not closed and check its error state. Errors are cumulative; once the stream encounters an error, this routine will return true on all successive calls.

Overrides:

checkError in class PrintWriter

Returns:

True if the print stream has encountered an error, either on the underlying output stream or during a format conversion.

flush

public void flush()

Flush the stream.

Specified by:

flush in interface Flushable

Overrides:

flush in class PrintWriter

See Also:

checkError()

handleIOException

protected void handleIOException(IOException e)

print

public void print(Object obj)

Print an object. The string produced by the String.valueOf(Object) method is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the write(int) method.

Overrides:

print in class PrintWriter

Parameters:

obj - The Object to be printed

See Also:

Object.toString()

print

public void print(String s)

Print a string. If the argument is null then the string "" is printed. Otherwise, the string's characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the write(int) method.

Overrides:

print in class PrintWriter

Parameters:

s - The String to be printed

write

public void write(String s)

Writes a string. If the argument is null then the string "" is printed.

Overrides:

write in class PrintWriter

Parameters:

s - The String to be printed

write

public void write(int c)

Write a single character.

Overrides:

write in class PrintWriter

Parameters:

c - int specifying a character to be written.

write

public void write(char[] buf,
                  int off,
                  int len)

Write a portion of an array of characters.

Overrides:

write in class PrintWriter

Parameters:

buf - Array of characters

off - Offset from which to start writing characters

len - Number of characters to write

write

public void write(String s,
                  int off,
                  int len)

Write a portion of a string.

Overrides:

write in class PrintWriter

Parameters:

s - A String

off - Offset from which to start writing characters

len - Number of characters to write

write

public void write(char[] buf)

Overrides:

write in class PrintWriter

print

public void print(boolean b)

delegate methods, not synchronized

Overrides:

print in class PrintWriter

print

public void print(char c)

Overrides:

print in class PrintWriter

print

public void print(int i)

Overrides:

print in class PrintWriter

print

public void print(long l)

Overrides:

print in class PrintWriter

print

public void print(float f)

Overrides:

print in class PrintWriter

print

public void print(double d)

Overrides:

print in class PrintWriter

print

public void print(char[] s)

Overrides:

print in class PrintWriter

println

public void println()

Overrides:

println in class PrintWriter

println

public void println(boolean b)

Overrides:

println in class PrintWriter

println

public void println(char c)

Overrides:

println in class PrintWriter

println

public void println(int i)

Overrides:

println in class PrintWriter

println

public void println(long l)

Overrides:

println in class PrintWriter

println

public void println(float f)

Overrides:

println in class PrintWriter

println

public void println(double d)

Overrides:

println in class PrintWriter

println

public void println(char[] c)

Overrides:

println in class PrintWriter

println

public void println(String s)

Overrides:

println in class PrintWriter

println

public void println(Object o)

Overrides:

println in class PrintWriter

append

public PrintWriter append(char c)

Specified by:

append in interface Appendable

Overrides:

append in class PrintWriter

append

public PrintWriter append(CharSequence csq,
                          int start,
                          int end)

Specified by:

append in interface Appendable

Overrides:

append in class PrintWriter

append

public PrintWriter append(CharSequence csq)

Specified by:

append in interface Appendable

Overrides:

append in class PrintWriter

clone

protected Object clone()
                throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException