io.crate.operation.scalar

Class SubstrFunction

java.lang.Object

io.crate.metadata.Scalar<org.apache.lucene.util.BytesRef,java.lang.Object>

io.crate.operation.scalar.SubstrFunction

All Implemented Interfaces:

DynamicFunctionResolver, FunctionImplementation<Function>

public class SubstrFunction
extends Scalar<org.apache.lucene.util.BytesRef,java.lang.Object>
implements DynamicFunctionResolver

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	NAME

Constructor Summary

Constructors

Constructor and Description
SubstrFunction()
SubstrFunction(FunctionInfo info)

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.lucene.util.BytesRef	evaluate(Input[] args)
FunctionImplementation<Function>	getForTypes(java.util.List<DataType> dataTypes) returns the function implementation for the given types.
FunctionInfo	info()
Symbol	normalizeSymbol(Function symbol)
static void	register(ScalarFunctionModule module)
static org.apache.lucene.util.BytesRef	substring(org.apache.lucene.util.BytesRef utf8, int begin, int end)

Methods inherited from class io.crate.metadata.Scalar

anyNonLiterals, compile, containsNullLiteral, evaluateIfLiterals, hasNullInputs

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

Constructor Detail

SubstrFunction

public SubstrFunction()

SubstrFunction

public SubstrFunction(FunctionInfo info)

Method Detail

register

public static void register(ScalarFunctionModule module)

info

public FunctionInfo info()

Specified by:

info in interface FunctionImplementation<Function>

evaluate

public org.apache.lucene.util.BytesRef evaluate(Input[] args)

Specified by:

evaluate in class Scalar<org.apache.lucene.util.BytesRef,java.lang.Object>

substring

public static org.apache.lucene.util.BytesRef substring(org.apache.lucene.util.BytesRef utf8,
                                        int begin,
                                        int end)

normalizeSymbol

public Symbol normalizeSymbol(Function symbol)

Specified by:

normalizeSymbol in interface FunctionImplementation<Function>

getForTypes

public FunctionImplementation<Function> getForTypes(java.util.List<DataType> dataTypes)
                                             throws java.lang.IllegalArgumentException

Description copied from interface: DynamicFunctionResolver

returns the function implementation for the given types.

Specified by:

getForTypes in interface DynamicFunctionResolver

Throws:

java.lang.IllegalArgumentException - thrown if there is no function that can handle the given types.