org.tikv.common.predicates

类 PredicateUtils

java.lang.Object

org.tikv.common.predicates.PredicateUtils

public class PredicateUtils
extends Object

构造器概要

构造器

构造器和说明
PredicateUtils()

方法概要

限定符和类型	方法和说明
static List<IndexRange>	expressionToIndexRanges(List<Expression> pointPredicates, Optional<Expression> rangePredicate, TiTableInfo table, TiIndexInfo index) Build index ranges from access points and access conditions
static Set<ColumnRef>	extractColumnRefFromExpression(Expression expr)
static Expression	mergeCNFExpressions(List<Expression> exprs)

从类继承的方法 java.lang.Object

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

构造器详细资料

PredicateUtils

public PredicateUtils()

方法详细资料

mergeCNFExpressions

public static Expression mergeCNFExpressions(List<Expression> exprs)

extractColumnRefFromExpression

public static Set<ColumnRef> extractColumnRefFromExpression(Expression expr)

expressionToIndexRanges

public static List<IndexRange> expressionToIndexRanges(List<Expression> pointPredicates,
                                                       Optional<Expression> rangePredicate,
                                                       TiTableInfo table,
                                                       TiIndexInfo index)

Build index ranges from access points and access conditions

参数:

pointPredicates - conditions converting to a single point access

rangePredicate - conditions converting to a range

返回:

Index Range for scan