Package ch.tocco.nice2.persist.core.impl.hibernate.query.likeall

Class LikeAllFunction

java.lang.Object

ch.tocco.nice2.persist.core.impl.hibernate.query.likeall.LikeAllFunction

All Implemented Interfaces:

QueryFunction

@Component
public class LikeAllFunction
extends Object
implements QueryFunction

Implementation of our old "fulltext-search" function.

Example query:

     find Address where crosslike("word", fieldname1, fieldname2, fieldname3)
 

The crosslike function will translate this query into a OR combination comparing each field name against the string literal using EquationNode.Operator.LIKE.

So the example from above is transalted to this:

    fieldname1~"word1" or fieldname2~"word1" or fieldname3~"word1"
 

In case a path contains references to relations, this function partitions the crosslike among equal path names.

Constructor Summary

Constructors

Constructor	Description
LikeAllFunction()

Method Summary

Modifier and Type	Method	Description
String	getName()	The unique function name.
Node	partitionLike(NodeContainer container)	Partitions the children (actually the function's arguments) into a set of OR nodes each containing the children that belong to the same path set.
Node	postCompile(Cursor cursor, FuncallNode functionRoot, EntityModel entityModel)	Applies this function to the given (sub)tree.

Methods inherited from class java.lang.Object

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

Constructor Details

LikeAllFunction

public LikeAllFunction()

Method Details

getName

public String getName()

Description copied from interface: QueryFunction

The unique function name.

Specified by:

getName in interface QueryFunction

postCompile

public Node postCompile(Cursor cursor,
 FuncallNode functionRoot,
 EntityModel entityModel)
                 throws Exception

Description copied from interface: QueryFunction

Applies this function to the given (sub)tree.

Specified by:

postCompile in interface QueryFunction

Throws:

Exception

partitionLike

public Node partitionLike(NodeContainer container)

Partitions the children (actually the function's arguments) into a set of OR nodes each containing the children that belong to the same path set.

It creates and returns a new OR node containing itself OR nodes that represent the partitions. Each nested OR node contains a subset of the children of the specified container.