org.apache.ignite.cache.query

Class Query<T extends Query>

java.lang.Object

org.apache.ignite.cache.query.Query<T>

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ContinuousQuery, ScanQuery, SpiQuery, SqlFieldsQuery, SqlQuery, TextQuery

public abstract class Query<T extends Query>
extends Object
implements Serializable

Base class for all Ignite cache queries. Use SqlQuery and TextQuery for SQL and text queries accordingly.

Also contains convenience shortcuts for query object construction: sql(Class, String), sql(String), text(Class, String), scan(IgniteBiPredicate) and spi().

See Also:

IgniteCache.query(Query), IgniteCache.localQuery(Query), IgniteCache.queryFields(SqlFieldsQuery), IgniteCache.localQueryFields(SqlFieldsQuery), Serialized Form

Method Summary

Methods

Modifier and Type	Method and Description
static <K,V> ContinuousQuery<K,V>	continuous() Factory method for continuous queries.
int	getPageSize() Gets optional page size, if 0, then CacheQueryConfiguration#getPageSize() is used.
static <K,V> ScanQuery<K,V>	scan(IgniteBiPredicate<K,V> filter) Factory method for SPI queries.
T	setPageSize(int pageSize) Sets optional page size, if 0, then CacheQueryConfiguration#getPageSize() is used.
static SpiQuery	spi() Factory method for SPI queries.
static SqlQuery	sql(Class<?> type, String sql) Factory method for SQL queries.
static SqlFieldsQuery	sql(String sql) Factory method for SQL fields queries.
static TextQuery	text(Class<?> type, String txt) Factory method for Lucene fulltext queries.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

sql

public static SqlFieldsQuery sql(String sql)

Factory method for SQL fields queries.

Parameters:

sql - SQL Query string.

Returns:

SQL Fields query instance.

sql

public static SqlQuery sql(Class<?> type,
           String sql)

Factory method for SQL queries.

Parameters:

type - Type to be queried.

sql - SQL Query string.

Returns:

SQL Query instance.

text

public static TextQuery text(Class<?> type,
             String txt)

Factory method for Lucene fulltext queries.

Parameters:

type - Type to be queried.

txt - Search string.

Returns:

Fulltext query.

scan

public static <K,V> ScanQuery<K,V> scan(IgniteBiPredicate<K,V> filter)

Factory method for SPI queries.

Parameters:

filter - Filter.

Returns:

SPI Query.

spi

public static SpiQuery spi()

Factory method for SPI queries.

Returns:

SPI Query.

See Also:

IndexingSpi

continuous

public static <K,V> ContinuousQuery<K,V> continuous()

Factory method for continuous queries.

Returns:

Continuous query.

getPageSize

public int getPageSize()

Gets optional page size, if 0, then CacheQueryConfiguration#getPageSize() is used.

Returns:

Optional page size.

setPageSize

public T setPageSize(int pageSize)

Sets optional page size, if 0, then CacheQueryConfiguration#getPageSize() is used.

Parameters:

pageSize - Optional page size.

Returns:

this For chaining.

toString

public String toString()

Overrides:

toString in class Object