de.ipcon.db.oql.predicate

Class WherePredicate

java.lang.Object

de.ipcon.db.oql.predicate.WherePredicate

All Implemented Interfaces:

OQLExpressionEvaluatorI<WhereNode>, java.util.function.Predicate<BOI>

public class WherePredicate
extends java.lang.Object
implements OQLExpressionEvaluatorI<WhereNode>, java.util.function.Predicate<BOI>

Field Summary

Fields inherited from interface de.ipcon.db.oql.predicate.OQLExpressionEvaluatorI

INNER_JOIN_FILTERED_OUT

Constructor Summary

Constructors

Constructor and Description
WherePredicate(SchemaI schema, EntityI entity, java.lang.String alias, WhereNode node, java.lang.Object[] parameters)

Method Summary

Modifier and Type	Method and Description
java.lang.String	getAlias()
java.util.List<OQLExpressionEvaluatorI<?>>	getChildren() Nonnull list of available children
EntityI	getEntity() The entity of the current context
WhereNode	getNode() The parsed OQL Node that belongs to this expression evaluator
java.lang.Object[]	getParameters() Fixed parameter provided to the OQL Query
OQLExpressionEvaluatorI<?>	getParent() The parent evaluator
SchemaI	getSchema() The schema to use for evaluation.
java.lang.Object	getValue(BOI bo) Computes the raw value of the expression evaluated on the provided BO.
boolean	test(BOI bo)

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

WherePredicate

public WherePredicate(SchemaI schema,
                      EntityI entity,
                      java.lang.String alias,
                      WhereNode node,
                      java.lang.Object[] parameters)
               throws OQLException

Throws:

OQLException

Method Detail

test

public boolean test(BOI bo)

Specified by:

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

getValue

public java.lang.Object getValue(BOI bo)

Description copied from interface: OQLExpressionEvaluatorI

Computes the raw value of the expression evaluated on the provided BO. Can return a flat Collection (Sets preferred) if the evaluation contains a join and has multiple results due to the internally created cross-product.

Specified by:

getValue in interface OQLExpressionEvaluatorI<WhereNode>

Parameters:

bo - the nonnull root BO to evaluate the node on

Returns:

the raw value of the OQL expression that this predicate represents. Can be an arbitrary return value, e.g. Strings, Boolean, INNER_JOIN_FILTERED_OUT, null, etc.

getParent

public OQLExpressionEvaluatorI<?> getParent()

Description copied from interface: OQLExpressionEvaluatorI

The parent evaluator

Specified by:

getParent in interface OQLExpressionEvaluatorI<WhereNode>

getChildren

public java.util.List<OQLExpressionEvaluatorI<?>> getChildren()

Description copied from interface: OQLExpressionEvaluatorI

Nonnull list of available children

Specified by:

getChildren in interface OQLExpressionEvaluatorI<WhereNode>

getNode

public WhereNode getNode()

Description copied from interface: OQLExpressionEvaluatorI

The parsed OQL Node that belongs to this expression evaluator

Specified by:

getNode in interface OQLExpressionEvaluatorI<WhereNode>

getSchema

public SchemaI getSchema()

Description copied from interface: OQLExpressionEvaluatorI

The schema to use for evaluation. In Unittests, the provided BOI might not have a schema assigned

Specified by:

getSchema in interface OQLExpressionEvaluatorI<WhereNode>

getEntity

public EntityI getEntity()

Description copied from interface: OQLExpressionEvaluatorI

The entity of the current context

Specified by:

getEntity in interface OQLExpressionEvaluatorI<WhereNode>

getParameters

public java.lang.Object[] getParameters()

Description copied from interface: OQLExpressionEvaluatorI

Fixed parameter provided to the OQL Query

Specified by:

getParameters in interface OQLExpressionEvaluatorI<WhereNode>

getAlias

public java.lang.String getAlias()

Specified by:

getAlias in interface OQLExpressionEvaluatorI<WhereNode>

Returns:

the current Alias in the OQL Query