org.elasticsearch.common.io
Class StringBuilderWriter

java.lang.Object
  java.io.Writer
      org.elasticsearch.common.io.StringBuilderWriter

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.Appendable

@NotThreadSafe
public class StringBuilderWriter
extends java.io.Writer

A Writer based on StringBuilder. Also alows for thread local reuse of StringBuilder by using: StringBuilderWriter.Cached.cached() in order to obtain the cached writer. Note, in such cases, the getBuilder() should be called and used (usually toString it) before another usage of the writer.

Nested Class Summary

static class

StringBuilderWriter.Cached A thread local based cache of StringBuilderWriter.

Field Summary

Fields inherited from class java.io.Writer

lock

Constructor Summary

StringBuilderWriter()
Construct a new StringBuilder instance with default capacity.

StringBuilderWriter(int capacity)
Construct a new StringBuilder instance with the specified capacity.

StringBuilderWriter(java.lang.StringBuilder builder)
Construct a new instance with the specified StringBuilder.

Method Summary

java.io.Writer	append(char value) Append a single character to this Writer.
java.io.Writer	append(java.lang.CharSequence value) Append a character sequence to this Writer.
java.io.Writer	append(java.lang.CharSequence value, int start, int end) Append a portion of a character sequence to the StringBuilder.
void	close() Closing this writer has no effect.
void	flush() Flushing this writer has no effect.
java.lang.StringBuilder	getBuilder() Return the underlying builder.
java.lang.String	toString() Returns StringBuilder.toString().
void	write(char[] value, int offset, int length) Write a portion of a character array to the StringBuilder.
void	write(java.lang.String value) Write a String to the StringBuilder.

Methods inherited from class java.io.Writer

write, write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

StringBuilderWriter

public StringBuilderWriter()

Construct a new StringBuilder instance with default capacity.

StringBuilderWriter

public StringBuilderWriter(int capacity)

Construct a new StringBuilder instance with the specified capacity.

Parameters:

capacity - The initial capacity of the underlying StringBuilder

StringBuilderWriter

public StringBuilderWriter(java.lang.StringBuilder builder)

Construct a new instance with the specified StringBuilder.

Parameters:

builder - The String builder

Method Detail

append

public java.io.Writer append(char value)

Append a single character to this Writer.

Specified by:

append in interface java.lang.Appendable

Overrides:

append in class java.io.Writer

Parameters:

value - The character to append

Returns:

This writer instance

append

public java.io.Writer append(java.lang.CharSequence value)

Append a character sequence to this Writer.

Specified by:

append in interface java.lang.Appendable

Overrides:

append in class java.io.Writer

Parameters:

value - The character to append

Returns:

This writer instance

append

public java.io.Writer append(java.lang.CharSequence value,
                             int start,
                             int end)

Append a portion of a character sequence to the StringBuilder.

Specified by:

append in interface java.lang.Appendable

Overrides:

append in class java.io.Writer

Parameters:

value - The character to append

start - The index of the first character

end - The index of the last character + 1

Returns:

This writer instance

close

public void close()

Closing this writer has no effect.

Specified by:

close in interface java.io.Closeable

Specified by:

close in class java.io.Writer

flush

public void flush()

Flushing this writer has no effect.

Specified by:

flush in interface java.io.Flushable

Specified by:

flush in class java.io.Writer

write

public void write(java.lang.String value)

Write a String to the StringBuilder.

Overrides:

write in class java.io.Writer

Parameters:

value - The value to write

write

public void write(char[] value,
                  int offset,
                  int length)

Write a portion of a character array to the StringBuilder.

Specified by:

write in class java.io.Writer

Parameters:

value - The value to write

offset - The index of the first character

length - The number of characters to write

getBuilder

public java.lang.StringBuilder getBuilder()

Return the underlying builder.

Returns:

The underlying builder

toString

public java.lang.String toString()

Returns StringBuilder.toString().

Overrides:

toString in class java.lang.Object

Returns:

The contents of the String builder.