com.marklogic.mapreduce.functions
Class ElemValueCooccurrences

java.lang.Object
  com.marklogic.mapreduce.functions.LexiconFunction
      com.marklogic.mapreduce.functions.CooccurrencesFunction
          com.marklogic.mapreduce.functions.ElemValueCooccurrences

public abstract class ElemValueCooccurrences
extends CooccurrencesFunction

Wrapper class for the cts:element-value-co-occurrences lexicon function. Subclass this class to generate map input based on a lexicon.

Use this class with KeyValueInputFormat or ValueInputFormat.

To generate map input from the lexicon function, create a subclass of this class and provide implementations of the methods that correspond to the function parameters you want to include in the call.

For details, see "Using a Lexicon to Generate Key-Value Pairs" in the MarkLogic Connector for Hadoop Developer's Guide. For an example, see LinkCountCooccurrences.

All co-occurrences functions using this API do NOT preserve frequency order even if "frequency-order" option is specified.

Constructor Summary

ElemValueCooccurrences()

Method Summary

abstract String	getElementName1() Get the value for the $element-name-1 parameter to the lexicon function call, as a string.
abstract String	getElementName2() Get the value for the $element-name-2 parameter to the lexicon function call, as a string.

Methods inherited from class com.marklogic.mapreduce.functions.CooccurrencesFunction

getInputQuery

Methods inherited from class com.marklogic.mapreduce.functions.LexiconFunction

getLexiconQuery, getUserDefinedOptions

Methods inherited from class java.lang.Object

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

Constructor Detail

ElemValueCooccurrences

public ElemValueCooccurrences()

Method Detail

getElementName1

public abstract String getElementName1()

Get the value for the $element-name-1 parameter to the lexicon function call, as a string. The returned string must evaluate to an xs:QName when evaluated as XQuery. For example: "xs:QName(\"wp:a\")".

Returns:

first element QName.

getElementName2

public abstract String getElementName2()

Get the value for the $element-name-2 parameter to the lexicon function call, as a string. The returned string must evaluate to an xs:QName when evaluated as XQuery. For example: "xs:QName(\"wp:a\")".

Returns:

first element QName.