org.apache.jackrabbit.core.query.lucene
Class QueryImpl

java.lang.Object
  org.apache.jackrabbit.core.query.lucene.AbstractQueryImpl
      org.apache.jackrabbit.core.query.lucene.QueryImpl

All Implemented Interfaces:

ExecutableQuery

public class QueryImpl
extends AbstractQueryImpl

Implements the ExecutableQuery interface.

Field Summary

static Name	DEFAULT_SELECTOR_NAME The default selector name 's'.
protected QueryRootNode	root The root node of the query tree

Fields inherited from class org.apache.jackrabbit.core.query.lucene.AbstractQueryImpl

index, propReg, sessionContext

Constructor Summary

QueryImpl(SessionContext sessionContext, SearchIndex index, PropertyTypeRegistry propReg, String statement, String language, QueryNodeFactory factory)
Creates a new query instance from a query string.

Method Summary

protected ColumnImpl	columnForName(Name propertyName) Returns a column for the given property name and the default selector name.
QueryResult	execute(long offset, long limit) Executes this query and returns a QueryResult.
protected ColumnImpl[]	getColumns() Returns the columns for this query.
boolean	needsSystemTree() Returns true if this query node needs items under /jcr:system to be queried.

Methods inherited from class org.apache.jackrabbit.core.query.lucene.AbstractQueryImpl

getQOMFactory, getRespectDocumentOrder, setRespectDocumentOrder

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SELECTOR_NAME

public static final Name DEFAULT_SELECTOR_NAME

The default selector name 's'.

root

protected final QueryRootNode root

The root node of the query tree

Constructor Detail

QueryImpl

public QueryImpl(SessionContext sessionContext,
                 SearchIndex index,
                 PropertyTypeRegistry propReg,
                 String statement,
                 String language,
                 QueryNodeFactory factory)
          throws InvalidQueryException

Creates a new query instance from a query string.

Parameters:

sessionContext - component context of the current session

index - the search index.

propReg - the property type registry.

statement - the query statement.

language - the syntax of the query statement.

factory - the query node factory.

Throws:

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

Method Detail

execute

public QueryResult execute(long offset,
                           long limit)
                    throws RepositoryException

Executes this query and returns a QueryResult.

Parameters:

offset - the offset in the total result set

limit - the maximum result size

Returns:

a QueryResult

Throws:

RepositoryException - if an error occurs

getColumns

protected ColumnImpl[] getColumns()
                           throws RepositoryException

Returns the columns for this query.

Returns:

array of columns.

Throws:

RepositoryException - if an error occurs.

needsSystemTree

public boolean needsSystemTree()

Returns true if this query node needs items under /jcr:system to be queried.

Specified by:

needsSystemTree in class AbstractQueryImpl

Returns:

true if this query node needs content under /jcr:system to be queried; false otherwise.

columnForName

protected ColumnImpl columnForName(Name propertyName)
                            throws RepositoryException

Returns a column for the given property name and the default selector name.

Parameters:

propertyName - the name of the property as well as the column.

Returns:

a column.

Throws:

RepositoryException - if an error occurs while creating the column.