it.unibz.inf.ontop.spec.mapping.parser.impl

Class RAExpressionAttributes

java.lang.Object

it.unibz.inf.ontop.spec.mapping.parser.impl.RAExpressionAttributes

public class RAExpressionAttributes
extends Object

Created by roman on 24/01/2017.

Constructor Summary

Constructors

Constructor and Description
RAExpressionAttributes(com.google.common.collect.ImmutableMap<QualifiedAttributeID,it.unibz.inf.ontop.model.term.ImmutableTerm> attributes, com.google.common.collect.ImmutableMap<QuotedID,com.google.common.collect.ImmutableSet<RelationID>> attributeOccurrences) constructs a relation expression

Method Summary

Modifier and Type	Method and Description
static RAExpressionAttributes	alias(RAExpressionAttributes re, RelationID alias) (relational expression) AS A
static RAExpressionAttributes	create(com.google.common.collect.ImmutableMap<QuotedID,it.unibz.inf.ontop.model.term.ImmutableTerm> unqualifiedAttributes, RelationID alias)
static RAExpressionAttributes	create(com.google.common.collect.ImmutableMap<QuotedID,it.unibz.inf.ontop.model.term.ImmutableTerm> unqualifiedAttributes, RelationID alias, RelationID schemalessId)
static RAExpressionAttributes	crossJoin(RAExpressionAttributes re1, RAExpressionAttributes re2) CROSS JOIN (also denoted by , in SQL)
com.google.common.collect.ImmutableMap<QualifiedAttributeID,it.unibz.inf.ontop.model.term.ImmutableTerm>	getAttributes()
static com.google.common.collect.ImmutableSet<QuotedID>	getShared(RAExpressionAttributes re1, RAExpressionAttributes re2) NATURAL JOIN
static RAExpressionAttributes	joinUsing(RAExpressionAttributes re1, RAExpressionAttributes re2, com.google.common.collect.ImmutableSet<QuotedID> using) JOIN USING
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

RAExpressionAttributes

public RAExpressionAttributes(com.google.common.collect.ImmutableMap<QualifiedAttributeID,it.unibz.inf.ontop.model.term.ImmutableTerm> attributes,
                              com.google.common.collect.ImmutableMap<QuotedID,com.google.common.collect.ImmutableSet<RelationID>> attributeOccurrences)

constructs a relation expression

Parameters:

attributes - an ImmutableMap<QualifiedAttributeID, Variable>

attributeOccurrences - an ImmutableMap<QuotedID, ImmutableSet<RelationID>>

Method Detail

getAttributes

public com.google.common.collect.ImmutableMap<QualifiedAttributeID,it.unibz.inf.ontop.model.term.ImmutableTerm> getAttributes()

crossJoin

public static RAExpressionAttributes crossJoin(RAExpressionAttributes re1,
                                               RAExpressionAttributes re2)
                                        throws IllegalJoinException

CROSS JOIN (also denoted by , in SQL)

Parameters:

re1 - a RAExpressionAttributes

re2 - a RAExpressionAttributes

Returns:

a RAExpressionAttributes

Throws:

IllegalJoinException - if the same alias occurs in both arguments

getShared

public static com.google.common.collect.ImmutableSet<QuotedID> getShared(RAExpressionAttributes re1,
                                                                         RAExpressionAttributes re2)

NATURAL JOIN

Parameters:

re1 - a RAExpressionAttributes

re2 - a RAExpressionAttributes

Returns:

a ImmutableSet<QuotedID>

joinUsing

public static RAExpressionAttributes joinUsing(RAExpressionAttributes re1,
                                               RAExpressionAttributes re2,
                                               com.google.common.collect.ImmutableSet<QuotedID> using)
                                        throws IllegalJoinException

JOIN USING

Parameters:

re1 - a RAExpressionAttributes

re2 - a RAExpressionAttributes

using - a ImmutableSet<QuotedID>

Returns:

a RAExpressionAttributes

Throws:

IllegalJoinException - if the same alias occurs in both arguments or one of the `using' attributes is ambiguous or absent

create

public static RAExpressionAttributes create(com.google.common.collect.ImmutableMap<QuotedID,it.unibz.inf.ontop.model.term.ImmutableTerm> unqualifiedAttributes,
                                            RelationID alias)

Parameters:

unqualifiedAttributes - a ImmutableMap<QuotedID, Variable>

alias - a RelationID

Returns:

a RAExpressionAttributes

create

public static RAExpressionAttributes create(com.google.common.collect.ImmutableMap<QuotedID,it.unibz.inf.ontop.model.term.ImmutableTerm> unqualifiedAttributes,
                                            RelationID alias,
                                            RelationID schemalessId)

alias

public static RAExpressionAttributes alias(RAExpressionAttributes re,
                                           RelationID alias)

(relational expression) AS A

Parameters:

re - a RAExpressionAttributes

alias - a QuotedID

Returns:

a RAExpressionAttributes

toString

public String toString()

Overrides:

toString in class Object