org.aksw.sparqlify.algebra.sql.nodes

Class SqlOpEmpty

java.lang.Object

org.aksw.sparqlify.algebra.sql.nodes.SqlOpBase

org.aksw.sparqlify.algebra.sql.nodes.SqlOpBase0

org.aksw.sparqlify.algebra.sql.nodes.SqlOpLeaf

org.aksw.sparqlify.algebra.sql.nodes.SqlOpEmpty

All Implemented Interfaces:

SqlOp

public class SqlOpEmpty
extends SqlOpLeaf

Field Summary

Fields inherited from class org.aksw.sparqlify.algebra.sql.nodes.SqlOpLeaf

aliasName

Fields inherited from class org.aksw.sparqlify.algebra.sql.nodes.SqlOpBase0

isEmpty

Fields inherited from class org.aksw.sparqlify.algebra.sql.nodes.SqlOpBase

schema

Constructor Summary

Constructors

Constructor and Description
SqlOpEmpty(Schema schema)
SqlOpEmpty(Schema schema, String aliasName)

Method Summary

Methods

Modifier and Type	Method and Description
static SqlOpEmpty	create()
static SqlOpEmpty	create(Schema schema)
static SqlOpEmpty	create(Schema schema, String aliasName)
static SqlOpEmpty	create(String columnName) Create an empty mapping with an named, null valued, integer column
String	getId()
boolean	isEmpty()

Methods inherited from class org.aksw.sparqlify.algebra.sql.nodes.SqlOpLeaf

getAliasName, getSubOps, setAliasName

Methods inherited from class org.aksw.sparqlify.algebra.sql.nodes.SqlOpBase

copy, getSchema, toString, write

Methods inherited from class java.lang.Object

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

Constructor Detail

SqlOpEmpty

public SqlOpEmpty(Schema schema)

SqlOpEmpty

public SqlOpEmpty(Schema schema,
          String aliasName)

Method Detail

create

public static SqlOpEmpty create()

create

public static SqlOpEmpty create(String columnName)

Create an empty mapping with an named, null valued, integer column

Parameters:

columnName -

Returns:

create

public static SqlOpEmpty create(Schema schema)

create

public static SqlOpEmpty create(Schema schema,
                String aliasName)

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface SqlOp

Overrides:

isEmpty in class SqlOpBase0

getId

public String getId()

Specified by:

getId in class SqlOpLeaf