de.ipcon.db.oql.predicate

Class OQLQueryPredicate

java.lang.Object

de.ipcon.db.oql.predicate.BOPredicate

de.ipcon.db.oql.predicate.OQLQueryPredicate

All Implemented Interfaces:

java.util.function.Predicate<BOI>

public class OQLQueryPredicate
extends BOPredicate

BOPredicate subclass where the conditions are generated by parsing a given OQL query. FIXME! TT 2023-03-08: Note that a lot of MyTISM OQL constructs are not yet supported. FIXME! TT 2023-03-08: It might be nice if the parameter values need not be given upon construction but could be dynamically set and changed later.

Constructor Summary

Constructors

Constructor and Description
OQLQueryPredicate(OQLQuery _oqlQuery, java.lang.Object[] _parameters)
OQLQueryPredicate(SchemaI _schema, QueryExpressionNode _queryExpressionNode, java.lang.Object[] _parameters)
OQLQueryPredicate(SchemaI _schema, java.lang.String _query, java.lang.Object[] _parameters)

Method Summary

Modifier and Type	Method and Description
static EntityI	determineEntity(SchemaI _schema, QueryExpressionNode _queryExpressionNode)
java.util.List<BOI>	filterBOs(java.util.Collection<BOI> bos) Filters BOs from the given collection by filtering them according to this predicate's test() method.
java.util.List<BOI>	filterBOs(java.util.Collection<BOI> bos, int limit)
java.util.List<BOI>	filterBOs(java.util.Iterator<BOI> bosIt)
java.util.List<BOI>	filterBOs(java.util.Iterator<BOI> bosIt, int limit)
java.lang.String	getAlias()
QueryExpressionNode	getQueryExpressionNode()
SchemaI	getSchema()
boolean	test(BOI bo)

Methods inherited from class de.ipcon.db.oql.predicate.BOPredicate

getEntity, setEntity, setSchema

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, isEqual, negate, or

Constructor Detail

OQLQueryPredicate

public OQLQueryPredicate(SchemaI _schema,
                         java.lang.String _query,
                         java.lang.Object[] _parameters)
                  throws OQLException,
                         UnsupportedQueryException

Throws:

OQLException

UnsupportedQueryException

OQLQueryPredicate

public OQLQueryPredicate(OQLQuery _oqlQuery,
                         java.lang.Object[] _parameters)
                  throws OQLException,
                         UnsupportedQueryException

Throws:

OQLException

UnsupportedQueryException

OQLQueryPredicate

public OQLQueryPredicate(SchemaI _schema,
                         QueryExpressionNode _queryExpressionNode,
                         java.lang.Object[] _parameters)
                  throws OQLException,
                         UnsupportedQueryException

Throws:

OQLException

UnsupportedQueryException

Method Detail

determineEntity

public static EntityI determineEntity(SchemaI _schema,
                                      QueryExpressionNode _queryExpressionNode)

getQueryExpressionNode

public QueryExpressionNode getQueryExpressionNode()

getSchema

public SchemaI getSchema()

Overrides:

getSchema in class BOPredicate

getAlias

public java.lang.String getAlias()

test

public boolean test(BOI bo)

Specified by:

test in interface java.util.function.Predicate<BOI>

Overrides:

test in class BOPredicate

filterBOs

public java.util.List<BOI> filterBOs(java.util.Collection<BOI> bos)

Filters BOs from the given collection by filtering them according to this predicate's test() method.

Parameters:

bos - the collection of BOs to filter

limit - a possible size limit for the returned list; if > 0 then at most the first [limit] matching entries - in the order as returned by the given collection's iterator - will be included in the result

Returns:

the list of BOs from the given collection matching this predicate's test() method

filterBOs

public java.util.List<BOI> filterBOs(java.util.Collection<BOI> bos,
                                     int limit)

filterBOs

public java.util.List<BOI> filterBOs(java.util.Iterator<BOI> bosIt)

filterBOs

public java.util.List<BOI> filterBOs(java.util.Iterator<BOI> bosIt,
                                     int limit)