Package org.hcjf.layers.query

Class BaseEvaluator.QueryValue

java.lang.Object

org.hcjf.layers.query.BaseEvaluator.QueryValue

All Implemented Interfaces:

BaseEvaluator.UnprocessedValue

Enclosing class:

BaseEvaluator

public static class BaseEvaluator.QueryValue
extends java.lang.Object
implements BaseEvaluator.UnprocessedValue

This kind of query value represents a sub-query.

Constructor Summary

Constructors

Constructor	Description
QueryValue(Query query)

Method Summary

Modifier and Type	Method	Description
Query	getQuery()	Return the sub-query instance.
java.lang.Object	process(Queryable.DataSource dataSource, Queryable.Consumer consumer)	Evaluate the sub-query a return the collection result set as value.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryValue

public QueryValue(Query query)

Method Detail

getQuery

public Query getQuery()

Return the sub-query instance.

Returns:

Sub-query instance.

process

public java.lang.Object process(Queryable.DataSource dataSource,
                                Queryable.Consumer consumer)

Evaluate the sub-query a return the collection result set as value. The first value of the parameters array (parameters[0]) is the instance of data source to evaluate the sub-query. The second value of the parameters array (parameters[1]) is the instance of the consumer to evaluate the sub-query. The rest of the parameters are the parameter to evaluate the sub-query..

Specified by:

process in interface BaseEvaluator.UnprocessedValue

Parameters:

dataSource - Data source of the in-evaluation object.

consumer - Consumer for the object.

Returns:

If the return fields size is one then the result will be a a list of values, else if the return fields size is greater than one then the result will be a collection with object instance.