Package com.orientechnologies.orient.core.sql

Class OSQLEngine

java.lang.Object

com.orientechnologies.orient.core.sql.OSQLEngine

public class OSQLEngine
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected static final OSQLEngine	INSTANCE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	OSQLEngine()

Method Summary

Modifier and Type	Method	Description
static Object	eval(String expression, Object target, OCommandContext ctx)
static Object	foreachRecord(OCallable<Object,OIdentifiable> iCallable, Object iCurrent, OCommandContext iContext)
static OCollate	getCollate(String name)
static Iterator<OCollateFactory>	getCollateFactories()
static Set<String>	getCollateNames()	Iterates on all factories and append all collate names.
OSQLFunction	getFunction(String iFunctionName)
static Iterator<OSQLFunctionFactory>	getFunctionFactories()
OSQLFunction	getFunctionIfExists(String iFunctionName)
static Set<String>	getFunctionNames()	Iterates on all factories and append all function names.
static OSQLEngine	getInstance()
static OSQLMethod	getMethod(String iMethodName)
static Iterator<OSQLMethodFactory>	getMethodFactories()
static Set<String>	getMethodNames()
static Iterator<OQueryOperatorFactory>	getOperatorFactories()
static Optional<OOrBlock>	maybeParsePredicate(String predicate)
static OStatement	parse(String query, ODatabaseDocumentInternal db)
static OExpression	parseExpression(String predicate)
static OOrBlock	parsePredicate(String predicate)
static List<OStatement>	parseScript(InputStream script, ODatabaseDocumentInternal db)
static List<OStatement>	parseScript(String script, ODatabaseDocumentInternal db)
static OSecurityResourceSegment	parseSecurityResource(String exp)
static OServerStatement	parseServerStatement(String query, OrientDBInternal db)
void	registerFunction(String iName, OSQLFunction iFunction)
void	registerFunction(String iName, Class<? extends OSQLFunction> iFunctionClass)
static void	scanForPlugins()	Scans for factory plug-ins on the application class path.
void	unregisterFunction(String iName)

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

protected static final OSQLEngine INSTANCE

Constructor Details

OSQLEngine

protected OSQLEngine()

Method Details

parse

public static OStatement parse(String query,
 ODatabaseDocumentInternal db)

parseServerStatement

public static OServerStatement parseServerStatement(String query,
 OrientDBInternal db)

parseScript

public static List<OStatement> parseScript(String script,
 ODatabaseDocumentInternal db)

parseScript

public static List<OStatement> parseScript(InputStream script,
 ODatabaseDocumentInternal db)

parsePredicate

public static OOrBlock parsePredicate(String predicate)
                               throws OCommandSQLParsingException

Throws:

OCommandSQLParsingException

maybeParsePredicate

public static Optional<OOrBlock> maybeParsePredicate(String predicate)
                                              throws OCommandSQLParsingException

Throws:

OCommandSQLParsingException

eval

public static Object eval(String expression,
 Object target,
 OCommandContext ctx)

parseExpression

public static OExpression parseExpression(String predicate)
                                   throws OCommandSQLParsingException

Throws:

OCommandSQLParsingException

parseSecurityResource

public static OSecurityResourceSegment parseSecurityResource(String exp)

getFunctionFactories

public static Iterator<OSQLFunctionFactory> getFunctionFactories()

Returns:

Iterator of all function factories

getMethodFactories

public static Iterator<OSQLMethodFactory> getMethodFactories()

getCollateFactories

public static Iterator<OCollateFactory> getCollateFactories()

Returns:

Iterator of all function factories

getOperatorFactories

public static Iterator<OQueryOperatorFactory> getOperatorFactories()

Returns:

Iterator of all operator factories

getFunctionNames

public static Set<String> getFunctionNames()

Iterates on all factories and append all function names.

Returns:

Set of all function names.

getMethodNames

public static Set<String> getMethodNames()

getCollateNames

public static Set<String> getCollateNames()

Iterates on all factories and append all collate names.

Returns:

Set of all colate names.

scanForPlugins

public static void scanForPlugins()

Scans for factory plug-ins on the application class path. This method is needed because the application class path can theoretically change, or additional plug-ins may become available. Rather than re-scanning the classpath on every invocation of the API, the class path is scanned automatically only on the first invocation. Clients can call this method to prompt a re-scan. Thus this method need only be invoked by sophisticated applications which dynamically make new plug-ins available at runtime.

foreachRecord

public static Object foreachRecord(OCallable<Object,OIdentifiable> iCallable,
 Object iCurrent,
 OCommandContext iContext)

getInstance

public static OSQLEngine getInstance()

getCollate

public static OCollate getCollate(String name)

getMethod

public static OSQLMethod getMethod(String iMethodName)

registerFunction

public void registerFunction(String iName,
 OSQLFunction iFunction)

registerFunction

public void registerFunction(String iName,
 Class<? extends OSQLFunction> iFunctionClass)

getFunction

public OSQLFunction getFunction(String iFunctionName)

getFunctionIfExists

public OSQLFunction getFunctionIfExists(String iFunctionName)

unregisterFunction

public void unregisterFunction(String iName)