org.apache.solr.analytics.function.mapping

Class ConcatFunction

java.lang.Object

org.apache.solr.analytics.function.mapping.ConcatFunction

public class ConcatFunction
extends Object

A concatenation mapping function, combining the string values of the given parameters. (At least 1 parameter is required)

Uses:

• If a single StringValueStream is passed in, a StringValue representing the concatenation of the values for each document is returned. No ordering is guaranteed while concatenating.
• If a StringValue and a StringValueStream are passed in, a StringValueStream representing the concatenation of the Value and each of the values of the ValueStream for a document is returned. (Or the other way, since the Value and ValueStream can be used in either order)
• If any number (more than 0) of StringValues are passed in, a StringValue representing the concatenation of all values is returned. If any values don't exist, the overall concatenation value will still exist with an empty string used for any missing values. If none of the parameter values exist, then the overall concatenation value will not exist.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ConcatFunction.SeparatedConcatFunction A concatenation mapping function, combining the string values of the given parameters with a given separating string.

Field Summary

Fields

Modifier and Type	Field and Description
static ExpressionFactory.CreatorFunction	creatorFunction
static String	name

Constructor Summary

Constructors

Constructor and Description
ConcatFunction()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

name

public static final String name

See Also:

Constant Field Values

creatorFunction

public static final ExpressionFactory.CreatorFunction creatorFunction

Constructor Detail

ConcatFunction

public ConcatFunction()