Package org.apache.druid.query.expression

Class ContainsExprMacro

java.lang.Object

org.apache.druid.query.expression.ContainsExprMacro

All Implemented Interfaces:

ExprMacroTable.ExprMacro, NamedFunction

public class ContainsExprMacro
extends Object
implements ExprMacroTable.ExprMacro

This class implements a function that checks if one string contains another string. It is required that second string be a literal. This expression is case-sensitive. signature: long contains_string(string, string)

Examples: - contains_string("foobar", "bar") - 1 - contains_string("foobar", "car") - 0 - contains_string("foobar", "Bar") - 0

See CaseInsensitiveContainsExprMacro for the case-insensitive version.

Field Summary

Fields

Modifier and Type	Field	Description
static String	FN_NAME

Constructor Summary

Constructors

Constructor	Description
ContainsExprMacro()

Method Summary

Modifier and Type	Method	Description
Expr	apply(List<Expr> args)
String	name()	Name of the function

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.math.expr.NamedFunction

processingFailed, validationFailed, validationFailed, validationHelperCheckAnyOfArgumentCount, validationHelperCheckArgIsLiteral, validationHelperCheckArgumentCount, validationHelperCheckArgumentCount, validationHelperCheckArgumentRange, validationHelperCheckLambaArgumentCount, validationHelperCheckMinArgumentCount, validationHelperCheckMinArgumentCount

Field Detail

FN_NAME

public static final String FN_NAME

See Also:

Constant Field Values

Constructor Detail

ContainsExprMacro

public ContainsExprMacro()

Method Detail

name

public String name()

Description copied from interface: NamedFunction

Name of the function

Specified by:

name in interface NamedFunction

apply

public Expr apply(List<Expr> args)

Specified by:

apply in interface ExprMacroTable.ExprMacro