Package javax.jcr.query

Interface QueryManager

public interface QueryManager

This interface encapsulates methods for the management of search queries. Provides methods for the creation and retrieval of search queries.

Method Summary

Modifier and Type	Method	Description
Query	createQuery(String statement, String language)	Creates a new query by specifying the query statement itself and the language in which the query is stated.
QueryObjectModelFactory	getQOMFactory()	Returns a QueryObjectModelFactory with which a JCR-JQOM query can be built programmatically.
Query	getQuery(Node node)	Retrieves an existing persistent query.
String[]	getSupportedQueryLanguages()	Returns an array of strings representing all query languages supported by this repository.

Method Detail

createQuery

Query createQuery(String statement,
                  String language)
           throws InvalidQueryException,
                  RepositoryException

Creates a new query by specifying the query statement itself and the language in which the query is stated. The language must be a string from among those returned by QueryManager.getSupportedQueryLanguages().

Parameters:

statement - a String

language - a String

Returns:

a Query object

Throws:

InvalidQueryException - if the query statement is syntactically invalid or the specified language is not supported.

RepositoryException - if another error occurs.

getQOMFactory

QueryObjectModelFactory getQOMFactory()

Returns a QueryObjectModelFactory with which a JCR-JQOM query can be built programmatically.

Returns:

a QueryObjectModelFactory object

Since:

JCR 2.0

getQuery

Query getQuery(Node node)
        throws InvalidQueryException,
               RepositoryException

Retrieves an existing persistent query.

Persistent queries are created by first using createQuery(java.lang.String, java.lang.String) to create a Query object and then calling Query.save to persist the query to a location in the workspace.

Parameters:

node - a persisted query (that is, a node of type nt:query).

Returns:

a Query object.

Throws:

InvalidQueryException - If node is not a valid persisted query (that is, a node of type nt:query).

RepositoryException - if another error occurs

getSupportedQueryLanguages

String[] getSupportedQueryLanguages()
                             throws RepositoryException

Returns an array of strings representing all query languages supported by this repository. This set must include at least the strings represented by the constants Query.JCR_SQL2 and Query.JCR_JQOM}. An implementation may also support other languages, including the deprecated languages of JCR 1.0: Query.XPATH and Query.SQL.

Returns:

A string array.

Throws:

RepositoryException - if an error occurs.