org.apache.calcite.model.JsonTable Maven / Gradle / Ivy
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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 org.apache.calcite.model;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import java.util.ArrayList;
import java.util.List;
/**
* Table schema element.
*
* Occurs within {@link JsonMapSchema#tables}.
*
* @see JsonRoot Description of schema elements
*/
@JsonTypeInfo(
use = JsonTypeInfo.Id.NAME,
property = "type",
defaultImpl = JsonCustomTable.class)
@JsonSubTypes({
@JsonSubTypes.Type(value = JsonCustomTable.class, name = "custom"),
@JsonSubTypes.Type(value = JsonView.class, name = "view") })
public abstract class JsonTable {
/** Name of this table.
*
*
Required. Must be unique within the schema.
*/
public String name;
/** Definition of the columns of this table.
*
*
Required for some kinds of type,
* optional for others (such as {@link JsonView}).
*/
public final List columns = new ArrayList<>();
/** Information about whether the table can be streamed, and if so, whether
* the history of the table is also available. */
public JsonStream stream;
public abstract void accept(ModelHandler handler);
}
// End JsonTable.java