com.allanbank.mongodb.client.message

Class QueryVersionVisitor

java.lang.Object

com.allanbank.mongodb.bson.VisitorAdapter

com.allanbank.mongodb.client.message.QueryVersionVisitor

All Implemented Interfaces:

Visitor

public class QueryVersionVisitor
extends VisitorAdapter

QueryVersionVisitor provides the ability to inspect a query document for the required server version.

Copyright ©:

2013, Allanbank Consulting, Inc., All Rights Reserved

Constructor Summary

Constructors

Constructor and Description
QueryVersionVisitor() Creates a new QueryVersionVisitor.

Method Summary

Methods

Modifier and Type	Method and Description
Version	getMaximumServerVersion() Returns the version of the server that removed the ability to process the visited query.
Version	getRequiredServerVersion() Returns the required server version to support the visited query.
static VersionRange	version(Document query) Helper to returns the required server version to support the query operators.
protected void	visitName(String name) Overridden to determine the version of the server required based on the query operators.

Methods inherited from class com.allanbank.mongodb.bson.VisitorAdapter

visit, visitArray, visitBinary, visitBoolean, visitDBPointer, visitDocument, visitDouble, visitInteger, visitJavaScript, visitJavaScript, visitLong, visitMaxKey, visitMinKey, visitMongoTimestamp, visitNull, visitObjectId, visitRegularExpression, visitString, visitSymbol, visitTimestamp

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryVersionVisitor

public QueryVersionVisitor()

Creates a new QueryVersionVisitor.

Method Detail

version

public static VersionRange version(Document query)

Helper to returns the required server version to support the query operators.

Parameters:

query - The query to inspect.

Returns:

The version of the server that is required to support to support the query. May be null.

getMaximumServerVersion

public Version getMaximumServerVersion()

Returns the version of the server that removed the ability to process the visited query.

Returns:

The version of the server that removed the ability to process the visited query.

getRequiredServerVersion

public Version getRequiredServerVersion()

Returns the required server version to support the visited query.

Returns:

The required server version to support the visited query.

visitName

protected void visitName(String name)

Overridden to determine the version of the server required based on the query operators.

Extension point for Visitor implementation only interested in the name of the elements.

Overrides:

visitName in class VisitorAdapter

Parameters:

name - The name of the element.