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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hazelcast.shaded.org.apache.calcite.schema;

import com.hazelcast.shaded.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.shaded.org.apache.calcite.rex.RexBuilder;
import com.hazelcast.shaded.org.apache.calcite.rex.RexNode;
import com.hazelcast.shaded.org.apache.calcite.util.ImmutableIntList;

/**
 * A modifiable view onto {@link ModifiableTable}.
 *
 * 

It describes how its columns map onto the underlying table's columns, * and any constraints that incoming rows must satisfy. * *

For example, given * *

 *   CREATE TABLE emps (empno INTEGER, gender VARCHAR(1), deptno INTEGER);
 *   CREATE VIEW female_emps AS
 *     SELECT empno, deptno FROM emps WHERE gender = 'F';
 * 
* *

constraint is {@code $1 = 'F'} * and column mapping is {@code [0, 2]}. * *

NOTE: The current API is inefficient and experimental. It will change * without notice. */ public interface ModifiableView extends Table { /** Returns a constraint that each candidate row must satisfy. * *

Never null; if there is no constraint, returns "true". * * @param rexBuilder Rex builder * @param tableRowType Row type of the table that this view maps onto */ RexNode getConstraint(RexBuilder rexBuilder, RelDataType tableRowType); /** Returns the column mapping onto another table. * *

{@code mapping[i]} contains the column of the underlying table that the * {@code i}th column of the view comes from, or -1 if it is based on an * expression. */ ImmutableIntList getColumnMapping(); /** Returns the underlying table. */ Table getTable(); /** Returns the full path of the underlying table. */ Path getTablePath(); }





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