org.aksw.sparqlify.compile.sparql

Class SqlExprOptimizer

java.lang.Object

org.aksw.sparqlify.compile.sparql.SqlExprOptimizer

Deprecated.

@Deprecated
public class SqlExprOptimizer
extends Object

Deprecated, Superseded by PushDown TODO The optimize methods are not deprecated, but the translate methods are

Author:

raven

Field Summary

Fields

Modifier and Type	Field and Description
static Map<Class,Class>	functionToInverse Deprecated.
static org.slf4j.Logger	logger Deprecated.

Constructor Summary

Constructors

Constructor and Description
SqlExprOptimizer() Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
static List<Alignment>	align(List<com.hp.hpl.jena.sparql.expr.Expr> a, List<com.hp.hpl.jena.sparql.expr.Expr> b) Deprecated.
static void	alignRec(List<com.hp.hpl.jena.sparql.expr.Expr> a, int oa, List<com.hp.hpl.jena.sparql.expr.Expr> b, int ob, List<List<com.hp.hpl.jena.sparql.expr.Expr>> result) Deprecated.
static List<com.hp.hpl.jena.sparql.expr.Expr>	copyReplace(List<com.hp.hpl.jena.sparql.expr.Expr> a, int itemIndex, String[] parts) Deprecated.
static <T> org.aksw.commons.util.Pair<T,T>	createPair(T a, T b, boolean swapArgs) Deprecated.
static int	indexOfFirstConstant(List<com.hp.hpl.jena.sparql.expr.Expr> a, int offset) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.E_Equals expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.E_GreaterThan expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.E_GreaterThanOrEqual expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.E_LessThan expr) Deprecated. The expression (a < b), where a and b are RdfTerm(type, obj, lang, datatype), could become: Worst case: a.type < b.type || a.type = b.type && a.obj < b.obj || a.type = b.type && a.type = 2 && a.obj = b.obj && a.lang < b.lang || a.type = b.type && a.type = 3 && a.obj = b.obj && a.datatype < b.datatype || Optimization: Skip datatype and language in comparisions.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.E_LessThanOrEqual expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.Expr expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.ExprFunction expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimize(com.hp.hpl.jena.sparql.expr.ExprFunction2 expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimizeCompare(com.hp.hpl.jena.sparql.expr.Expr a, com.hp.hpl.jena.sparql.expr.Expr b, Class<?> clazz) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimizeCompare(com.hp.hpl.jena.sparql.expr.Expr ea, com.hp.hpl.jena.sparql.expr.Expr eb, Factory2<com.hp.hpl.jena.sparql.expr.Expr> factory) Deprecated. FIXME The following expression is crap.
static com.hp.hpl.jena.sparql.expr.Expr	optimizeCompare(com.hp.hpl.jena.sparql.expr.ExprFunction2 expr) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimizeEqualsConcat2(List<com.hp.hpl.jena.sparql.expr.Expr> la, List<com.hp.hpl.jena.sparql.expr.Expr> lb) Deprecated.
static org.aksw.commons.util.Pair<com.hp.hpl.jena.sparql.expr.Expr,com.hp.hpl.jena.sparql.expr.Expr>	optimizeFunctionOpConstant(com.hp.hpl.jena.sparql.expr.Expr a, com.hp.hpl.jena.sparql.expr.Expr b) Deprecated.
static List<com.hp.hpl.jena.sparql.expr.Expr>	optimizeList(List<com.hp.hpl.jena.sparql.expr.Expr> exprs) Deprecated.
static com.hp.hpl.jena.sparql.expr.Expr	optimizeMM(com.hp.hpl.jena.sparql.expr.Expr expr) Deprecated.
static String[]	split(String str, int i, int l) Deprecated.
static List<Alignment>	toAlignment(List<com.hp.hpl.jena.sparql.expr.Expr> a, List<List<com.hp.hpl.jena.sparql.expr.Expr>> bs) Deprecated.
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.E_Equals expr) Deprecated.
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.E_Function expr) Deprecated. Overrides ExprFunction
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.E_NotEquals expr) Deprecated.
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.E_Regex expr) Deprecated.
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.E_StrConcat expr) Deprecated.
static SqlExpr	translate(E_StrConcatPermissive expr) Deprecated.
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.ExprFunction expr) Deprecated. Warning: FIXME This may cause undesired effects if thero is no appropriate override for Jena as domain classes such as E_Regex, as it would not be convertet to S_Regex
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.ExprVar expr) Deprecated. Currently we translate specially named sparql variables to sql column references: ?tableAlias.columnName
static SqlExpr	translate(com.hp.hpl.jena.sparql.expr.NodeValue expr) Deprecated.
static List<SqlExpr>	translateArgs(Iterable<com.hp.hpl.jena.sparql.expr.Expr> exprs) Deprecated.
static List<SqlExpr>	translateList(List<com.hp.hpl.jena.sparql.expr.Expr> exprs) Deprecated.
static SqlExpr	translateMM(com.hp.hpl.jena.sparql.expr.Expr expr) Deprecated.
static SqlExprColumn	translateVar(com.hp.hpl.jena.sparql.core.Var var) Deprecated.

Methods inherited from class java.lang.Object

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

Field Detail

logger

public static org.slf4j.Logger logger

Deprecated.

functionToInverse

public static Map<Class,Class> functionToInverse

Deprecated.

Constructor Detail

SqlExprOptimizer

public SqlExprOptimizer()

Deprecated.

Method Detail

optimizeMM

public static com.hp.hpl.jena.sparql.expr.Expr optimizeMM(com.hp.hpl.jena.sparql.expr.Expr expr)

Deprecated.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.Expr expr)

Deprecated.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.ExprFunction expr)

Deprecated.

optimizeList

public static List<com.hp.hpl.jena.sparql.expr.Expr> optimizeList(List<com.hp.hpl.jena.sparql.expr.Expr> exprs)

Deprecated.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.ExprFunction2 expr)

Deprecated.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.E_LessThan expr)

Deprecated.

The expression (a < b), where a and b are RdfTerm(type, obj, lang, datatype), could become: Worst case: a.type < b.type || a.type = b.type && a.obj < b.obj || a.type = b.type && a.type = 2 && a.obj = b.obj && a.lang < b.lang || a.type = b.type && a.type = 3 && a.obj = b.obj && a.datatype < b.datatype || Optimization: Skip datatype and language in comparisions. TODO We have to consider datatypes to rule out invalid comparisions (in regard to the datatypes). However, this should be done on the SQL level.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.E_LessThanOrEqual expr)

Deprecated.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.E_GreaterThan expr)

Deprecated.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.E_GreaterThanOrEqual expr)

Deprecated.

optimizeCompare

public static com.hp.hpl.jena.sparql.expr.Expr optimizeCompare(com.hp.hpl.jena.sparql.expr.ExprFunction2 expr)

Deprecated.

optimizeCompare

public static com.hp.hpl.jena.sparql.expr.Expr optimizeCompare(com.hp.hpl.jena.sparql.expr.Expr a,
                                               com.hp.hpl.jena.sparql.expr.Expr b,
                                               Class<?> clazz)

Deprecated.

optimizeCompare

public static com.hp.hpl.jena.sparql.expr.Expr optimizeCompare(com.hp.hpl.jena.sparql.expr.Expr ea,
                                               com.hp.hpl.jena.sparql.expr.Expr eb,
                                               Factory2<com.hp.hpl.jena.sparql.expr.Expr> factory)

Deprecated.

FIXME The following expression is crap. I must have written it before I was clear about type errors... a.type < b.type || a.type = b.type && a.obj < b.obj || a.type = b.type && a.type = 2 && a.obj = b.obj && a.lang < b.lang || a.type = b.type && a.type = 3 && a.obj = b.obj && a.datatype < b.datatype ||

Parameters:

a -

b -

exprFactory - Factory for creating a comparision expression

Returns:

createPair

public static <T> org.aksw.commons.util.Pair<T,T> createPair(T a,
                                             T b,
                                             boolean swapArgs)

Deprecated.

optimizeFunctionOpConstant

public static org.aksw.commons.util.Pair<com.hp.hpl.jena.sparql.expr.Expr,com.hp.hpl.jena.sparql.expr.Expr> optimizeFunctionOpConstant(com.hp.hpl.jena.sparql.expr.Expr a,
                                                                                                                       com.hp.hpl.jena.sparql.expr.Expr b)

Deprecated.

optimize

public static com.hp.hpl.jena.sparql.expr.Expr optimize(com.hp.hpl.jena.sparql.expr.E_Equals expr)

Deprecated.

toAlignment

public static List<Alignment> toAlignment(List<com.hp.hpl.jena.sparql.expr.Expr> a,
                          List<List<com.hp.hpl.jena.sparql.expr.Expr>> bs)

Deprecated.

align

public static List<Alignment> align(List<com.hp.hpl.jena.sparql.expr.Expr> a,
                    List<com.hp.hpl.jena.sparql.expr.Expr> b)

Deprecated.

indexOfFirstConstant

public static int indexOfFirstConstant(List<com.hp.hpl.jena.sparql.expr.Expr> a,
                       int offset)

Deprecated.

copyReplace

public static List<com.hp.hpl.jena.sparql.expr.Expr> copyReplace(List<com.hp.hpl.jena.sparql.expr.Expr> a,
                                                 int itemIndex,
                                                 String[] parts)

Deprecated.

Parameters:

a -

i - index of a constant

j - position within the string of the constant

Returns:

split

public static String[] split(String str,
             int i,
             int l)

Deprecated.

alignRec

public static void alignRec(List<com.hp.hpl.jena.sparql.expr.Expr> a,
            int oa,
            List<com.hp.hpl.jena.sparql.expr.Expr> b,
            int ob,
            List<List<com.hp.hpl.jena.sparql.expr.Expr>> result)

Deprecated.

Parameters:

a - The longer array

b - The shorter one

optimizeEqualsConcat2

public static com.hp.hpl.jena.sparql.expr.Expr optimizeEqualsConcat2(List<com.hp.hpl.jena.sparql.expr.Expr> la,
                                                     List<com.hp.hpl.jena.sparql.expr.Expr> lb)

Deprecated.

translateMM

public static SqlExpr translateMM(com.hp.hpl.jena.sparql.expr.Expr expr)

Deprecated.

translateArgs

public static List<SqlExpr> translateArgs(Iterable<com.hp.hpl.jena.sparql.expr.Expr> exprs)

Deprecated.

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.E_Regex expr)

Deprecated.

translate

public static SqlExpr translate(E_StrConcatPermissive expr)

Deprecated.

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.ExprFunction expr)

Deprecated.

Warning: FIXME This may cause undesired effects if thero is no appropriate override for Jena as domain classes such as E_Regex, as it would not be convertet to S_Regex

Parameters:

expr -

Returns:

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.E_Function expr)

Deprecated.

Overrides ExprFunction

Parameters:

expr -

Returns:

translateVar

public static SqlExprColumn translateVar(com.hp.hpl.jena.sparql.core.Var var)

Deprecated.

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.ExprVar expr)

Deprecated.

Currently we translate specially named sparql variables to sql column references: ?tableAlias.columnName

Parameters:

expr -

Returns:

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.NodeValue expr)

Deprecated.

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.E_NotEquals expr)

Deprecated.

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.E_StrConcat expr)

Deprecated.

translate

public static SqlExpr translate(com.hp.hpl.jena.sparql.expr.E_Equals expr)

Deprecated.

translateList

public static List<SqlExpr> translateList(List<com.hp.hpl.jena.sparql.expr.Expr> exprs)

Deprecated.