Package com.cedarsoftware.io.writers

Class ReentrantLockWriter

java.lang.Object

com.cedarsoftware.io.writers.ReentrantLockWriter

All Implemented Interfaces:

JsonClassWriter

public class ReentrantLockWriter
extends Object
implements JsonClassWriter

Custom writer for ReentrantLock that outputs the fairness setting instead of the internal sync field (which cannot be deserialized).

Output format: {"@type":"java.util.concurrent.locks.ReentrantLock","fair":true/false}

Note: Lock state (held count, owner thread) is NOT preserved - only the fairness policy is serialized.

Author:

John DeRegnaucourt (jdereg@gmail.com)
Copyright (c) Cedar Software LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

License

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Constructor Summary

Constructors

Constructor	Description
ReentrantLockWriter()

Method Summary

Modifier and Type	Method	Description
boolean	hasPrimitiveForm(WriterContext context)	Indicates whether this class has a primitive (non-object) JSON form.
void	write(Object obj, boolean showType, Writer output, WriterContext context)	Write the object in JSON format to the output Writer.
void	writePrimitiveForm(Object o, Writer output, WriterContext context)	Write the object in its primitive JSON form (without surrounding braces).

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.cedarsoftware.io.JsonClassWriter

getTypeName

Constructor Details

ReentrantLockWriter

public ReentrantLockWriter()

Method Details

write

public void write(Object obj,
 boolean showType,
 Writer output,
 WriterContext context)
           throws IOException

Description copied from interface: JsonClassWriter

Write the object in JSON format to the output Writer.

Specified by:

write in interface JsonClassWriter

Parameters:

obj - Object to be written in JSON format

showType - boolean indicating whether to include @type in the output

output - Writer destination where the JSON is written

context - WriterContext providing access to WriteOptions and other write utilities

Throws:

IOException - if an I/O error occurs during writing

hasPrimitiveForm

public boolean hasPrimitiveForm(WriterContext context)

Description copied from interface: JsonClassWriter

Indicates whether this class has a primitive (non-object) JSON form. Most custom writers will not have a primitive form, so the default is false.

Specified by:

hasPrimitiveForm in interface JsonClassWriter

Parameters:

context - WriterContext providing access to WriteOptions

Returns:

true if this class can be written as a JSON primitive value

writePrimitiveForm

public void writePrimitiveForm(Object o,
 Writer output,
 WriterContext context)
                        throws IOException

Description copied from interface: JsonClassWriter

Write the object in its primitive JSON form (without surrounding braces). Only called if JsonClassWriter.hasPrimitiveForm(WriterContext) returns true.

Specified by:

writePrimitiveForm in interface JsonClassWriter

Parameters:

o - Object to be written

output - Writer destination where the JSON is written

context - WriterContext providing access to WriteOptions and writing tools

Throws:

IOException - if an I/O error occurs during writing