org.nhindirect.policy.impl

Class JavaSerializedObjectLexiconPolicyParser

java.lang.Object

org.nhindirect.policy.impl.JavaSerializedObjectLexiconPolicyParser

All Implemented Interfaces:

PolicyExpressionSerializer, PolicyLexiconParser

public class JavaSerializedObjectLexiconPolicyParser
extends java.lang.Object
implements PolicyLexiconParser, PolicyExpressionSerializer

Implementation of a PolicyLexiconParser that parses expressions using the PolicyLexicon.JAVA_SER lexicon. This parse uses the Java serialized object format to parse and serialize expressions.

Since:

1.0

Author:

Greg Meyer

Constructor Summary

Constructors

Constructor and Description
JavaSerializedObjectLexiconPolicyParser() Default constructor

Method Summary

Modifier and Type	Method and Description
PolicyExpression	deserialize(java.io.InputStream stream) Deserializes the contents of input stream to a PolicyExpression.
PolicyExpression	parse(java.io.InputStream stream) Parsers an expression from an input stream written in the specific lexicon into a PolicyExpression object.
void	serialize(PolicyExpression expression, java.io.OutputStream out) Serialized a PolicyExpression to an output stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaSerializedObjectLexiconPolicyParser

public JavaSerializedObjectLexiconPolicyParser()

Default constructor

Method Detail

parse

public PolicyExpression parse(java.io.InputStream stream)
                       throws PolicyParseException

Parsers an expression from an input stream written in the specific lexicon into a PolicyExpression object.

Specified by:

parse in interface PolicyLexiconParser

Parameters:

stream - An input stream containing the expression written in the specific lexicon.

Returns:

A PolicyExpression object resulting from parsing the input stream.

Throws:

PolicyParseException - Thrown in the input stream cannot be parsed into a PolicyExpression object.

deserialize

public PolicyExpression deserialize(java.io.InputStream stream)
                             throws PolicyParseException

Deserializes the contents of input stream to a PolicyExpression.

Specified by:

deserialize in interface PolicyExpressionSerializer

Parameters:

stream - The serialized content in an input stream.

Returns:

The PolicyExpression that has been serialized.

Throws:

PolicyParseException - Thrown if the input stream cannot be deserialized successfully into a PolicyExpression object.

serialize

public void serialize(PolicyExpression expression,
                      java.io.OutputStream out)
               throws PolicyParseException

Serialized a PolicyExpression to an output stream.

Specified by:

serialize in interface PolicyExpressionSerializer

Parameters:

expression - The expression to serialize.

out - The output stream to write the serialized expression to.

Throws:

PolicyParseException - Thrown if the PolicyExpression object cannot be successfully serialized to the output stream.