org.apache.flink.connector.mongodb.table

类 MongoFilterPushDownVisitor

java.lang.Object

org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.bson.BsonValue>

org.apache.flink.connector.mongodb.table.MongoFilterPushDownVisitor

所有已实现的接口:

org.apache.flink.table.expressions.ExpressionVisitor<org.bson.BsonValue>

@Experimental
public class MongoFilterPushDownVisitor
extends org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.bson.BsonValue>

Visitor that convert Expression to Bson filter. Return Filters.empty() if we cannot push down the filter.

字段概要

字段

限定符和类型	字段和说明
static MongoFilterPushDownVisitor	INSTANCE

方法概要

限定符和类型	方法和说明
protected org.bson.BsonDocument	defaultMethod(org.apache.flink.table.expressions.Expression expression)
org.bson.BsonDocument	visit(org.apache.flink.table.expressions.CallExpression call)
org.bson.BsonString	visit(org.apache.flink.table.expressions.FieldReferenceExpression fieldReference)
org.bson.BsonValue	visit(org.apache.flink.table.expressions.ValueLiteralExpression litExp)

从类继承的方法 org.apache.flink.table.expressions.ExpressionDefaultVisitor

visit, visit

从类继承的方法 java.lang.Object

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

字段详细资料

INSTANCE

public static final MongoFilterPushDownVisitor INSTANCE

方法详细资料

visit

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

指定者:

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

覆盖:

visit 在类中 org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.bson.BsonValue>

visit

public org.bson.BsonValue visit(org.apache.flink.table.expressions.ValueLiteralExpression litExp)

指定者:

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

覆盖:

visit 在类中 org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.bson.BsonValue>

visit

public org.bson.BsonString visit(org.apache.flink.table.expressions.FieldReferenceExpression fieldReference)

指定者:

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

覆盖:

visit 在类中 org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.bson.BsonValue>

defaultMethod

protected org.bson.BsonDocument defaultMethod(org.apache.flink.table.expressions.Expression expression)

指定者:

defaultMethod 在类中 org.apache.flink.table.expressions.ExpressionDefaultVisitor<org.bson.BsonValue>