com.orientechnologies.orient.core.sql

Class OIndexSearchResult

java.lang.Object

com.orientechnologies.orient.core.sql.OIndexSearchResult

public class OIndexSearchResult
extends Object

Presents query subset in form of field1 = "field1 value" AND field2 = "field2 value" ... AND fieldN anyOpetator "fieldN value"

Where pairs (field1, value1) ... (fieldn-1, valuen-1) are stored in fieldValuePairs map but last pair is stored in lastField lastValue properties and their operator will be stored in lastOperator property.

Such data structure is used because from composite index point of view any "field and value" pairs can be reordered to match keys order that is used in index in case all fields and values are related to each other using equals operator, but position of field - value pair that uses non equals operator cannot be changed. Actually only one non-equals operator can be used for composite index search and filed - value pair that uses this index should always be placed at last position.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	containsNullValues
Map<String,Object>	fieldValuePairs
OSQLFilterItemField.FieldChain	lastField
OQueryOperator	lastOperator
Object	lastValue

Constructor Summary

Constructors

Constructor and Description
OIndexSearchResult(OQueryOperator lastOperator, OSQLFilterItemField.FieldChain field, Object value)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
List<String>	fields()
int	hashCode()
static boolean	isIndexEqualityOperator(OQueryOperator queryOperator)
OIndexSearchResult	merge(OIndexSearchResult searchResult) Combines two queries subset into one.

Methods inherited from class java.lang.Object

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

Field Detail

fieldValuePairs

public final Map<String,Object> fieldValuePairs

lastOperator

public final OQueryOperator lastOperator

lastField

public final OSQLFilterItemField.FieldChain lastField

lastValue

public final Object lastValue

containsNullValues

protected boolean containsNullValues

Constructor Detail

OIndexSearchResult

public OIndexSearchResult(OQueryOperator lastOperator,
                          OSQLFilterItemField.FieldChain field,
                          Object value)

Method Detail

isIndexEqualityOperator

public static boolean isIndexEqualityOperator(OQueryOperator queryOperator)

merge

public OIndexSearchResult merge(OIndexSearchResult searchResult)

Combines two queries subset into one. This operation will be valid only if canBeMerged(OIndexSearchResult) method will return true for the same passed in parameter.

Parameters:

searchResult - Query subset to merge.

Returns:

New instance that presents merged query.

fields

public List<String> fields()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object