org.apache.ignite.internal.processors.query.h2.sql

Class GridSqlQueryParser

java.lang.Object

org.apache.ignite.internal.processors.query.h2.sql.GridSqlQueryParser

public class GridSqlQueryParser
extends Object

H2 Query parser.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GridSqlQueryParser.Getter<T,R> Field getter.
static class	GridSqlQueryParser.PreparedWithRemaining

Field Summary

Fields

Modifier and Type	Field and Description
static String	ORG_H2_COMMAND_COMMAND_LIST
static String	PARAM_DATA_REGION Data region name.
static String	PARAM_WRAP_VALUE
static GridSqlQueryParser.Getter<TableView,Query>	VIEW_QUERY

Constructor Summary

Constructors

Constructor and Description
GridSqlQueryParser(boolean useOptimizedSubqry)

Method Summary

Modifier and Type	Method and Description
Collection<Integer>	cacheIds()
static boolean	checkMultipleStatements(PreparedStatement stmt)
static GridH2Table	dmlTable(Prepared stmt)
GridCacheContext	getFirstPartitionedCache() Get first (i.e. random, as we need any one) partitioned cache from parsed query to determine expected query parallelism.
static boolean	isForUpdateQuery(Prepared p)
boolean	isLocalQuery() Check if query may be run locally on all caches mentioned in the query.
static boolean	isStreamableInsertStatement(PreparedStatement nativeStmt) Check if passed statement is insert statement eligible for streaming.
Map<Object,Object>	objectsMap()
GridSqlStatement	parse(Prepared stmt)
static Prepared	prepared(PreparedStatement stmt)
static GridSqlQueryParser.PreparedWithRemaining	preparedWithRemaining(PreparedStatement stmt)
static Query	query(Prepared qry)
static String	rewriteQueryForUpdateIfNeeded(Prepared p, boolean inTx)

Methods inherited from class java.lang.Object

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

Field Detail

VIEW_QUERY

public static final GridSqlQueryParser.Getter<TableView,Query> VIEW_QUERY

ORG_H2_COMMAND_COMMAND_LIST

public static final String ORG_H2_COMMAND_COMMAND_LIST

See Also:

Constant Field Values

PARAM_WRAP_VALUE

public static final String PARAM_WRAP_VALUE

See Also:

Constant Field Values

PARAM_DATA_REGION

public static final String PARAM_DATA_REGION

Data region name.

See Also:

Constant Field Values

Constructor Detail

GridSqlQueryParser

public GridSqlQueryParser(boolean useOptimizedSubqry)

Parameters:

useOptimizedSubqry - If we have to find correct order for table filters in FROM clause. Relies on uniqueness of table filter aliases.

Method Detail

checkMultipleStatements

public static boolean checkMultipleStatements(PreparedStatement stmt)

Parameters:

stmt - Prepared statement to check.

Returns:

true in case of multiple statements.

prepared

public static Prepared prepared(PreparedStatement stmt)

Parameters:

stmt - Prepared statement.

Returns:

Parsed select.

preparedWithRemaining

public static GridSqlQueryParser.PreparedWithRemaining preparedWithRemaining(PreparedStatement stmt)

Parameters:

stmt - Prepared statement.

Returns:

Parsed select.

isForUpdateQuery

public static boolean isForUpdateQuery(Prepared p)

Parameters:

p - Prepared.

Returns:

Whether p is an SELECT FOR UPDATE query.

rewriteQueryForUpdateIfNeeded

public static String rewriteQueryForUpdateIfNeeded(Prepared p,
                                                   boolean inTx)

Parameters:

p - Statement to rewrite, if needed.

inTx - Whether there is an active transaction.

Returns:

Query with key and val columns appended to the list of columns, if it's an FOR UPDATE query, or null if nothing has to be done.

query

public static Query query(Prepared qry)

Parameters:

qry - Prepared.

Returns:

Query.

dmlTable

public static GridH2Table dmlTable(Prepared stmt)

Parameters:

stmt - Prepared.

Returns:

Target table.

isLocalQuery

public boolean isLocalQuery()

Check if query may be run locally on all caches mentioned in the query.

Returns:

true if query may be run locally on all caches mentioned in the query, i.e. there's no need to run distributed query.

getFirstPartitionedCache

public GridCacheContext getFirstPartitionedCache()

Get first (i.e. random, as we need any one) partitioned cache from parsed query to determine expected query parallelism.

Returns:

Context for the first of partitioned caches mentioned in the query, or null if it does not involve partitioned caches.

cacheIds

public Collection<Integer> cacheIds()

Returns:

All known cache IDs.

parse

public final GridSqlStatement parse(Prepared stmt)

Parameters:

stmt - Prepared statement.

Returns:

Parsed AST.

objectsMap

public Map<Object,Object> objectsMap()

Returns:

H2 to Grid objects map.

isStreamableInsertStatement

public static boolean isStreamableInsertStatement(PreparedStatement nativeStmt)

Check if passed statement is insert statement eligible for streaming.

Parameters:

nativeStmt - Native statement.

Returns:

True if streamable insert.