com.hazelcast.org.apache.calcite.schema.impl.AbstractTableQueryable 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.
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package com.hazelcast.org.apache.calcite.schema.impl;
import com.hazelcast.org.apache.calcite.linq4j.AbstractQueryable;
import com.hazelcast.org.apache.calcite.linq4j.Linq4j;
import com.hazelcast.org.apache.calcite.linq4j.QueryProvider;
import com.hazelcast.org.apache.calcite.linq4j.Queryable;
import com.hazelcast.org.apache.calcite.linq4j.tree.Expression;
import com.hazelcast.org.apache.calcite.schema.QueryableTable;
import com.hazelcast.org.apache.calcite.schema.SchemaPlus;
import java.lang.reflect.Type;
import java.util.Iterator;
/**
* Abstract implementation of {@link com.hazelcast.org.apache.calcite.linq4j.Queryable} for
* {@link QueryableTable}.
*
* Not to be confused with
* {@link com.hazelcast.org.apache.calcite.adapter.java.AbstractQueryableTable}.
*
* @param element type
*/
public abstract class AbstractTableQueryable extends AbstractQueryable {
public final QueryProvider queryProvider;
public final SchemaPlus schema;
public final QueryableTable table;
public final String tableName;
protected AbstractTableQueryable(QueryProvider queryProvider,
SchemaPlus schema, QueryableTable table, String tableName) {
this.queryProvider = queryProvider;
this.schema = schema;
this.table = table;
this.tableName = tableName;
}
@Override public Expression getExpression() {
return table.getExpression(schema, tableName, Queryable.class);
}
@Override public QueryProvider getProvider() {
return queryProvider;
}
@Override public Type getElementType() {
return table.getElementType();
}
@Override public Iterator iterator() {
return Linq4j.enumeratorIterator(enumerator());
}
}
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