Package com.orientechnologies.lucene.functions

Class OLuceneSearchOnFieldsFunction

java.lang.Object

com.orientechnologies.orient.core.sql.functions.OSQLFunctionAbstract

com.orientechnologies.lucene.functions.OLuceneSearchFunctionTemplate

com.orientechnologies.lucene.functions.OLuceneSearchOnFieldsFunction

All Implemented Interfaces:

OIndexableSQLFunction, OSQLFunction

public class OLuceneSearchOnFieldsFunction
extends OLuceneSearchFunctionTemplate

Created by frank on 15/01/2017.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	NAME

Fields inherited from class com.orientechnologies.orient.core.sql.functions.OSQLFunctionAbstract

maxParams, minParams, name

Constructor Summary

Constructors

Constructor	Description
OLuceneSearchOnFieldsFunction()

Method Summary

Modifier and Type	Method	Description
Object	execute(Object iThis, OIdentifiable iCurrentRecord, Object iCurrentResult, Object[] params, OCommandContext ctx)	Process a record.
String	getName()	Function name, the name is used by the sql parser to identify a call this function.
String	getSyntax()	Returns a convenient SQL String representation of the function.
<T> boolean	intersect(List<T> list1, List<T> list2)
<T> List<T>	intersection(List<T> list1, List<T> list2)
protected OLuceneFullTextIndex	searchForIndex(OFromClause target, OCommandContext ctx, OExpression... args)
Iterable<OIdentifiable>	searchFromTarget(OFromClause target, OBinaryCompareOperator operator, Object rightValue, OCommandContext ctx, OExpression... args)	returns all the entries belonging to the target that match the binary condition where this function appears

Methods inherited from class com.orientechnologies.lucene.functions.OLuceneSearchFunctionTemplate

allowsIndexedExecution, canExecuteInline, estimate, getMetadata, shouldExecuteAfterSearch

Methods inherited from class com.orientechnologies.orient.core.sql.functions.OSQLFunctionAbstract

aggregateResults, config, filterResult, getDatabase, getDistributedStorageId, getMaxParams, getMinParams, getResult, getSingleItem, getSingleProperty, mergeDistributedResult, returnDistributedResult, setResult, shouldMergeDistributedResult, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.orientechnologies.orient.core.sql.functions.OSQLFunction

aggregateResults, config, filterResult, getMaxParams, getMinParams, getResult, mergeDistributedResult, setResult, shouldMergeDistributedResult

Field Details

NAME

public static final String NAME

See Also:

• Constant Field Values

Constructor Details

OLuceneSearchOnFieldsFunction

public OLuceneSearchOnFieldsFunction()

Method Details

getName

public String getName()

Description copied from interface: OSQLFunction

Function name, the name is used by the sql parser to identify a call this function.

Specified by:

getName in interface OSQLFunction

Overrides:

getName in class OSQLFunctionAbstract

Returns:

String , function name, never null or empty.

execute

public Object execute(Object iThis,
 OIdentifiable iCurrentRecord,
 Object iCurrentResult,
 Object[] params,
 OCommandContext ctx)

Description copied from interface: OSQLFunction

Process a record.

iCurrentRecord - : current record

iCurrentResult - TODO

params - : function parameters, number is ensured to be within minParams and maxParams.

ctx - : object calling this function

Returns:

function result, can be null. Special cases : can be null if function aggregate results, can be null if function filter results : this mean result is excluded

getSyntax

public String getSyntax()

Description copied from interface: OSQLFunction

Returns a convenient SQL String representation of the function.

Example :

  myFunction( param1, param2, [optionalParam3])
 

This text will be used in exception messages.

Returns:

String , never null.

searchFromTarget

public Iterable<OIdentifiable> searchFromTarget(OFromClause target,
 OBinaryCompareOperator operator,
 Object rightValue,
 OCommandContext ctx,
 OExpression... args)

Description copied from interface: OIndexableSQLFunction

returns all the entries belonging to the target that match the binary condition where this function appears

Parameters:

target - the query target

operator - the operator after the function, eg. in select from Foo where myFunction(name) > 4 the operator is >

rightValue - the value that has to be compared to the function result, eg. in select from Foo where myFunction(name) > 4 the right value is 4

ctx - the command context for this query

args - the function arguments, eg. in select from Foo where myFunction(name) > 4 the arguments are [name]

Returns:

an iterable of records that match the condition; null means that the execution could not be performed for some reason.

searchForIndex

protected OLuceneFullTextIndex searchForIndex(OFromClause target,
 OCommandContext ctx,
 OExpression... args)

Specified by:

searchForIndex in class OLuceneSearchFunctionTemplate

intersection

public <T> List<T> intersection(List<T> list1,
 List<T> list2)

intersect

public <T> boolean intersect(List<T> list1,
 List<T> list2)