org.gvsig.expressionevaluator.impl.function.predicate

Class LikeOperator

java.lang.Object

org.gvsig.expressionevaluator.spi.AbstractFunction

org.gvsig.expressionevaluator.impl.function.operator.AbstractBinaryOperator

org.gvsig.expressionevaluator.impl.function.predicate.LikeOperator

All Implemented Interfaces:

Function, BinaryOperator, Operator

public class LikeOperator
extends AbstractBinaryOperator

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.Integer	ONE_CHAR
protected static java.util.Map<java.lang.String,java.util.regex.Pattern>	patterns
protected static java.lang.Integer	ZERO_OR_MORE_CHARS

Fields inherited from class org.gvsig.expressionevaluator.spi.AbstractFunction

LOGGER, TYPE_BIGDECIMAL, TYPE_BOOLEAN, TYPE_DATE, TYPE_DOUBLE, TYPE_FLOAT, TYPE_INT, TYPE_LONG, TYPE_NULL, TYPE_STRING

Fields inherited from interface org.gvsig.expressionevaluator.Function

GROUP_AGGREGATE, GROUP_BOOLEAN, GROUP_CONVERSION, GROUP_DATETIME, GROUP_NUMERIC, GROUP_OGC, GROUP_OTHER, GROUP_PROGRAMMING, GROUP_STRING

Constructor Summary

Constructors

Constructor and Description
LikeOperator()

Method Summary

Modifier and Type	Method and Description
boolean	allowConstantFolding() Returns true if the function always returns the same value for the same parameters.
java.lang.Object	call(Interpreter interpreter, java.lang.Object op1, java.lang.Object op2)
protected static java.util.List<java.lang.Object>	compile(java.lang.String pattern)
static boolean	like(java.lang.String source, java.lang.String match)
static java.lang.String	toRegExp(java.util.List<java.lang.Object> pattern)

Methods inherited from class org.gvsig.expressionevaluator.impl.function.operator.AbstractBinaryOperator

call, isOperator

Methods inherited from class org.gvsig.expressionevaluator.spi.AbstractFunction

addAlias, aliases, argc, call, checkDoubleValue, checkFloatValue, description, descriptionArgs, getBigDecimal, getBoolean, getBoolean, getBoolean, getBoolean, getBoolean, getComparable, getComparable, getDate, getDate, getDouble, getDouble, getFile, getFile, getFloat, getFloat, getFullDescription, getInt, getInt, getInt, getJsonArray, getJsonArray, getJsonObject, getJsonObject, getJsonStructure, getJsonStructure, getList, getLocalDateTime, getLocalDateTime, getLong, getLong, getObject, getObject, getStr, getStr, getType, getURL, group, isHidden, isNull, isSQLCompatible, name, returnType, template, toBoolean, toString, toString, toValue, useArgumentsInsteadObjects

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gvsig.expressionevaluator.Function

addAlias, aliases, argc, call, description, descriptionArgs, getFullDescription, group, isHidden, isSQLCompatible, name, returnType, template, toString, toValue, useArgumentsInsteadObjects

Field Detail

ZERO_OR_MORE_CHARS

protected static final java.lang.Integer ZERO_OR_MORE_CHARS

ONE_CHAR

protected static final java.lang.Integer ONE_CHAR

patterns

protected static java.util.Map<java.lang.String,java.util.regex.Pattern> patterns

Constructor Detail

LikeOperator

public LikeOperator()

Method Detail

allowConstantFolding

public boolean allowConstantFolding()

Description copied from interface: Function

Returns true if the function always returns the same value for the same parameters. If so, it is possible to optimize the generated code through the process of "constant folding". https://en.wikipedia.org/wiki/Constant_folding

Specified by:

allowConstantFolding in interface Function

Overrides:

allowConstantFolding in class AbstractFunction

Returns:

true if this function allow constant folding optimization.

call

public java.lang.Object call(Interpreter interpreter,
                             java.lang.Object op1,
                             java.lang.Object op2)

like

public static boolean like(java.lang.String source,
                           java.lang.String match)

compile

protected static java.util.List<java.lang.Object> compile(java.lang.String pattern)

toRegExp

public static java.lang.String toRegExp(java.util.List<java.lang.Object> pattern)