org.aksw.sparqlify.core.algorithms

Class SqlExprUtils

java.lang.Object

org.aksw.sparqlify.core.algorithms.SqlExprUtils

public class SqlExprUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static ExprAccessor<SqlExpr>	accessor

Constructor Summary

Constructors

Constructor and Description
SqlExprUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static SqlExpr	andifyBalanced(Iterable<SqlExpr> exprs)
static List<SqlExpr>	cnfAsList(Collection<? extends Iterable<SqlExpr>> nf)
static void	collectColumnReferences(SqlExpr expr, Collection<S_ColumnRef> result)
static boolean	containsFalse(Iterable<SqlExpr> exprs, boolean includeTypeErrors)
static Set<S_ColumnRef>	getColumnReferences(SqlExpr expr)
static void	optimizeEqualityInPlace(List<Collection<SqlExpr>> cnf)
static void	optimizeNotNullInPlace(List<Collection<SqlExpr>> cnf)
static SqlExpr	orifyBalanced(Iterable<SqlExpr> exprs)
static List<Collection<SqlExpr>>	toCnf(Iterable<SqlExpr> exprs)
static List<Collection<SqlExpr>>	toCnf(SqlExpr expr)
static SqlExpr	toCnfExpr(SqlExpr expr)
static List<SqlExpr>	toDnf(Collection<? extends Iterable<SqlExpr>> clauses)

Methods inherited from class java.lang.Object

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

Field Detail

accessor

public static final ExprAccessor<SqlExpr> accessor

Constructor Detail

SqlExprUtils

public SqlExprUtils()

Method Detail

getColumnReferences

public static Set<S_ColumnRef> getColumnReferences(SqlExpr expr)

collectColumnReferences

public static void collectColumnReferences(SqlExpr expr,
                           Collection<S_ColumnRef> result)

cnfAsList

public static List<SqlExpr> cnfAsList(Collection<? extends Iterable<SqlExpr>> nf)

toDnf

public static List<SqlExpr> toDnf(Collection<? extends Iterable<SqlExpr>> clauses)

orifyBalanced

public static SqlExpr orifyBalanced(Iterable<SqlExpr> exprs)

andifyBalanced

public static SqlExpr andifyBalanced(Iterable<SqlExpr> exprs)

containsFalse

public static boolean containsFalse(Iterable<SqlExpr> exprs,
                    boolean includeTypeErrors)

toCnfExpr

public static SqlExpr toCnfExpr(SqlExpr expr)

toCnf

public static List<Collection<SqlExpr>> toCnf(SqlExpr expr)

toCnf

public static List<Collection<SqlExpr>> toCnf(Iterable<SqlExpr> exprs)

optimizeEqualityInPlace

public static void optimizeEqualityInPlace(List<Collection<SqlExpr>> cnf)

optimizeNotNullInPlace

public static void optimizeNotNullInPlace(List<Collection<SqlExpr>> cnf)