org.apache.flink.table.store.file.predicate

类 PredicateConverter

java.lang.Object

org.apache.flink.table.store.file.predicate.PredicateConverter

所有已实现的接口:

org.apache.flink.table.expressions.ExpressionVisitor<Predicate>

public class PredicateConverter
extends Object
implements org.apache.flink.table.expressions.ExpressionVisitor<Predicate>

Convert Expression to Predicate.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	PredicateConverter.UnsupportedExpression Encounter an unsupported expression, the caller can choose to ignore this filter branch.

构造器概要

构造器

构造器和说明
PredicateConverter(PredicateBuilder builder)
PredicateConverter(org.apache.flink.table.types.logical.RowType type)

方法概要

限定符和类型	方法和说明
static Optional<Predicate>	convert(org.apache.flink.table.types.logical.RowType rowType, org.apache.flink.table.expressions.ResolvedExpression filter) Try best to convert a ResolvedExpression to Predicate.
static Predicate	fromMap(Map<String,String> map, org.apache.flink.table.types.logical.RowType rowType)
Predicate	visit(org.apache.flink.table.expressions.CallExpression call)
Predicate	visit(org.apache.flink.table.expressions.Expression expression)
Predicate	visit(org.apache.flink.table.expressions.FieldReferenceExpression fieldReferenceExpression)
Predicate	visit(org.apache.flink.table.expressions.TypeLiteralExpression typeLiteralExpression)
Predicate	visit(org.apache.flink.table.expressions.ValueLiteralExpression valueLiteralExpression)

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

PredicateConverter

public PredicateConverter(org.apache.flink.table.types.logical.RowType type)

PredicateConverter

public PredicateConverter(PredicateBuilder builder)

方法详细资料

visit

public Predicate visit(org.apache.flink.table.expressions.CallExpression call)

指定者:

visit 在接口中 org.apache.flink.table.expressions.ExpressionVisitor<Predicate>

visit

public Predicate visit(org.apache.flink.table.expressions.ValueLiteralExpression valueLiteralExpression)

指定者:

visit 在接口中 org.apache.flink.table.expressions.ExpressionVisitor<Predicate>

visit

public Predicate visit(org.apache.flink.table.expressions.FieldReferenceExpression fieldReferenceExpression)

指定者:

visit 在接口中 org.apache.flink.table.expressions.ExpressionVisitor<Predicate>

visit

public Predicate visit(org.apache.flink.table.expressions.TypeLiteralExpression typeLiteralExpression)

指定者:

visit 在接口中 org.apache.flink.table.expressions.ExpressionVisitor<Predicate>

visit

public Predicate visit(org.apache.flink.table.expressions.Expression expression)

指定者:

visit 在接口中 org.apache.flink.table.expressions.ExpressionVisitor<Predicate>

convert

public static Optional<Predicate> convert(org.apache.flink.table.types.logical.RowType rowType,
                                          org.apache.flink.table.expressions.ResolvedExpression filter)

Try best to convert a ResolvedExpression to Predicate.

参数:

filter - a resolved expression

返回:

Predicate if no PredicateConverter.UnsupportedExpression thrown.

fromMap

@Nullable
public static Predicate fromMap(Map<String,String> map,
                                          org.apache.flink.table.types.logical.RowType rowType)