be.SIRAPRISE.typeimplementations
Class MATCHES_STRING_STRING

java.lang.Object
  be.SIRAPRISE.typeimplementations.MATCHES_STRING_STRING

All Implemented Interfaces:

OperatorImplementation, OperatorImplementation_V0104

public final class MATCHES_STRING_STRING
extends java.lang.Object
implements OperatorImplementation_V0104

MATCHES returns a boolean indicating whether the first argument matches the pattern string given as the second argument. "Matching" means the same thing as Java's regex matching.

Author:

Erwin

Constructor Summary

MATCHES_STRING_STRING()

Method Summary

ValueBuffer	executeOperator(java.util.LinkedList<ValueBuffer> args) MATCHES(s,p) returns true if the string s matches the regular expression p
java.lang.String[]	getArgumentTypeNames() MATCHES takes two arguments, both of type STRING
java.lang.String	getReturnTypeName() The return type is BOOLEAN
boolean	isDeterministic() Tells whether the operator is deterministic with respect to the arguments of its invocations.

Methods inherited from class java.lang.Object

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

Constructor Detail

MATCHES_STRING_STRING

public MATCHES_STRING_STRING()

Method Detail

executeOperator

public ValueBuffer executeOperator(java.util.LinkedList<ValueBuffer> args)

MATCHES(s,p) returns true if the string s matches the regular expression p

Specified by:

executeOperator in interface OperatorImplementation

Parameters:

args - the argument list. The list must hold as many ValueBuffer objects as there are arguments to the operator, and each ValueBuffer object holds a value for some argument to the operator. ValueBuffer objects on the list must appear in the same order as the operator argument declarations.

Returns:

A ValueBuffer object holding the result value of the operator execution in internal format.

getReturnTypeName

public java.lang.String getReturnTypeName()

The return type is BOOLEAN

Specified by:

getReturnTypeName in interface OperatorImplementation

Returns:

the name of the type of the return value

getArgumentTypeNames

public java.lang.String[] getArgumentTypeNames()

MATCHES takes two arguments, both of type STRING

Specified by:

getArgumentTypeNames in interface OperatorImplementation

Returns:

The names of the argument types

isDeterministic

public boolean isDeterministic()

Description copied from interface: OperatorImplementation_V0104

Tells whether the operator is deterministic with respect to the arguments of its invocations. An operator is deterministic if and only if for any two distinct invocations, if all the argument values are the same, then the result value returned will also be the same. An example of a nondeterministic operators is RANDOM().

Specified by:

isDeterministic in interface OperatorImplementation_V0104

Returns:

true if the operator is deterministic.