org.apache.jackrabbit.core.query

Class QueryImpl

java.lang.Object

org.apache.jackrabbit.core.query.AbstractQueryImpl

org.apache.jackrabbit.core.query.QueryImpl

All Implemented Interfaces:

javax.jcr.query.Query

Direct Known Subclasses:

QueryObjectModelImpl

public class QueryImpl
extends AbstractQueryImpl

Provides the default implementation for a JCR query.

Field Summary

Fields

Modifier and Type	Field and Description
protected QueryHandler	handler The query handler for this query.
protected String	language The syntax of the query statement
protected long	limit The maximum result size
protected javax.jcr.Node	node The node where this query is persisted.
protected long	offset The offset in the total result set
protected ExecutableQuery	query The actual query implementation that can be executed
protected SessionContext	sessionContext Component context of the current session
protected String	statement The query statement

Fields inherited from interface javax.jcr.query.Query

JCR_JQOM, JCR_SQL2, SQL, XPATH

Constructor Summary

Constructors

Constructor and Description
QueryImpl()

Method Summary

Methods

Modifier and Type	Method and Description
void	bindValue(String varName, javax.jcr.Value value) Throws an IllegalArgumentException as XPath and SQL1 queries have no bind variables.
protected void	checkInitialized() Checks if this query is initialized and throws an IllegalStateException if it is not yet initialized.
protected void	checkNotInitialized() Checks if this query is not yet initialized and throws an IllegalStateException if it is already initialized.
javax.jcr.query.QueryResult	execute() This method simply forwards the execute call to the ExecutableQuery object returned by QueryHandler.createExecutableQuery(org.apache.jackrabbit.core.session.SessionContext, java.lang.String, java.lang.String).
String[]	getBindVariableNames()
String	getLanguage()
String	getStatement()
String	getStoredQueryPath()
void	init(SessionContext sessionContext, QueryHandler handler, String statement, String language, javax.jcr.Node node) Initialises a query instance from a query string.
protected void	setInitialized() Sets the initialized flag.
void	setLimit(long limit) Sets the maximum size of the result set.
void	setOffset(long offset) Sets the start offset of the result set.
javax.jcr.Node	storeAsNode(String absPath)

Methods inherited from class java.lang.Object

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

Field Detail

sessionContext

protected SessionContext sessionContext

Component context of the current session

statement

protected String statement

The query statement

language

protected String language

The syntax of the query statement

query

protected ExecutableQuery query

The actual query implementation that can be executed

node

protected javax.jcr.Node node

The node where this query is persisted. Only set when this is a persisted query.

handler

protected QueryHandler handler

The query handler for this query.

limit

protected long limit

The maximum result size

offset

protected long offset

The offset in the total result set

Constructor Detail

QueryImpl

public QueryImpl()

Method Detail

init

public void init(SessionContext sessionContext,
        QueryHandler handler,
        String statement,
        String language,
        javax.jcr.Node node)
          throws javax.jcr.query.InvalidQueryException

Initialises a query instance from a query string.

Specified by:

init in class AbstractQueryImpl

Parameters:

sessionContext - component context of the current session

handler - the query handler of the search index.

statement - the query statement.

language - the syntax of the query statement.

node - a nt:query node where the query was read from or null if it is not a stored query.

Throws:

javax.jcr.query.InvalidQueryException - if the query statement is invalid according to the specified language.

execute

public javax.jcr.query.QueryResult execute()
                                    throws javax.jcr.RepositoryException

This method simply forwards the execute call to the ExecutableQuery object returned by QueryHandler.createExecutableQuery(org.apache.jackrabbit.core.session.SessionContext, java.lang.String, java.lang.String).

Throws:

javax.jcr.RepositoryException

getStatement

public String getStatement()

getLanguage

public String getLanguage()

getStoredQueryPath

public String getStoredQueryPath()
                          throws javax.jcr.ItemNotFoundException,
                                 javax.jcr.RepositoryException

Throws:

javax.jcr.ItemNotFoundException

javax.jcr.RepositoryException

storeAsNode

public javax.jcr.Node storeAsNode(String absPath)
                           throws javax.jcr.ItemExistsException,
                                  javax.jcr.PathNotFoundException,
                                  javax.jcr.version.VersionException,
                                  javax.jcr.nodetype.ConstraintViolationException,
                                  javax.jcr.lock.LockException,
                                  javax.jcr.UnsupportedRepositoryOperationException,
                                  javax.jcr.RepositoryException

Throws:

javax.jcr.ItemExistsException

javax.jcr.PathNotFoundException

javax.jcr.version.VersionException

javax.jcr.nodetype.ConstraintViolationException

javax.jcr.lock.LockException

javax.jcr.UnsupportedRepositoryOperationException

javax.jcr.RepositoryException

getBindVariableNames

public String[] getBindVariableNames()

bindValue

public void bindValue(String varName,
             javax.jcr.Value value)
               throws IllegalArgumentException

Throws an IllegalArgumentException as XPath and SQL1 queries have no bind variables.

Throws:

IllegalArgumentException - always thrown

setLimit

public void setLimit(long limit)

Sets the maximum size of the result set.

Parameters:

limit - new maximum size of the result set

setOffset

public void setOffset(long offset)

Sets the start offset of the result set.

Parameters:

offset - new start offset of the result set

setInitialized

protected void setInitialized()

Sets the initialized flag.

checkNotInitialized

protected void checkNotInitialized()

Checks if this query is not yet initialized and throws an IllegalStateException if it is already initialized.

checkInitialized

protected void checkInitialized()

Checks if this query is initialized and throws an IllegalStateException if it is not yet initialized.