org.aksw.sparqlify.compile.sparql

Class SqlAlgebraToString

java.lang.Object

org.aksw.sparqlify.compile.sparql.SqlAlgebraToString

public class SqlAlgebraToString
extends Object

Constructor Summary

Constructors

Constructor and Description
SqlAlgebraToString()

Method Summary

Modifier and Type	Method and Description
void	_asString(SqlAlias node, org.apache.jena.atlas.io.IndentedWriter writer)
void	_asString(SqlJoin node, org.apache.jena.atlas.io.IndentedWriter writer)
void	_asString(SqlNodeEmpty node, org.apache.jena.atlas.io.IndentedWriter writer)
void	_asString(SqlQuery node, org.apache.jena.atlas.io.IndentedWriter writer)
void	_asString(SqlSelectBlock node, org.apache.jena.atlas.io.IndentedWriter writer)
static void	_asString(SqlTable node, org.apache.jena.atlas.io.IndentedWriter writer)
void	_asString(SqlUnion node, org.apache.jena.atlas.io.IndentedWriter writer)
void	_asString(SqlUnionN node, org.apache.jena.atlas.io.IndentedWriter writer)
void	asString(SqlNodeOld node, org.apache.jena.atlas.io.IndentedWriter writer)
void	asStringJoinU(SqlNodeOld node, String aliasName, org.apache.jena.atlas.io.IndentedWriter writer)
static String	escapeAlias(String columnName) Column names that clash with keywords need to be escaped.
static String	getAliasName(SqlNodeOld node)
static void	groupBy(com.hp.hpl.jena.sparql.core.Var var, SqlNodeOld target, SqlNodeOld node, com.hp.hpl.jena.sdb.core.Generator generator) Merge all possible combinations of sparql vars into a single column
static String	makeString(SqlNodeOld node)
static String	projection(Map<String,SqlExpr> map)

Methods inherited from class java.lang.Object

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

Constructor Detail

SqlAlgebraToString

public SqlAlgebraToString()

Method Detail

makeString

public static String makeString(SqlNodeOld node)

asString

public void asString(SqlNodeOld node,
                     org.apache.jena.atlas.io.IndentedWriter writer)

projection

public static String projection(Map<String,SqlExpr> map)

escapeAlias

public static String escapeAlias(String columnName)

Column names that clash with keywords need to be escaped. TODO Make this properly. Also, maybe we need to do a renaming earlier.

Parameters:

columnName -

Returns:

_asString

public void _asString(SqlNodeEmpty node,
                      org.apache.jena.atlas.io.IndentedWriter writer)

_asString

public void _asString(SqlAlias node,
                      org.apache.jena.atlas.io.IndentedWriter writer)

_asString

public void _asString(SqlQuery node,
                      org.apache.jena.atlas.io.IndentedWriter writer)

groupBy

public static void groupBy(com.hp.hpl.jena.sparql.core.Var var,
                           SqlNodeOld target,
                           SqlNodeOld node,
                           com.hp.hpl.jena.sdb.core.Generator generator)

Merge all possible combinations of sparql vars into a single column

Parameters:

node -

getAliasName

public static String getAliasName(SqlNodeOld node)

_asString

public void _asString(SqlSelectBlock node,
                      org.apache.jena.atlas.io.IndentedWriter writer)

_asString

public void _asString(SqlUnion node,
                      org.apache.jena.atlas.io.IndentedWriter writer)

_asString

public void _asString(SqlUnionN node,
                      org.apache.jena.atlas.io.IndentedWriter writer)

asStringJoinU

public void asStringJoinU(SqlNodeOld node,
                          String aliasName,
                          org.apache.jena.atlas.io.IndentedWriter writer)

_asString

public void _asString(SqlJoin node,
                      org.apache.jena.atlas.io.IndentedWriter writer)

_asString

public static void _asString(SqlTable node,
                             org.apache.jena.atlas.io.IndentedWriter writer)