com.hazelcast.jet.sql.impl.connector.generator.SeriesSqlConnector Maven / Gradle / Ivy
/*
* Copyright 2021 Hazelcast Inc.
*
* Licensed under the Hazelcast Community License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://hazelcast.com/hazelcast-community-license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.sql.impl.connector.generator;
import com.hazelcast.jet.core.DAG;
import com.hazelcast.jet.core.ProcessorMetaSupplier;
import com.hazelcast.jet.core.Vertex;
import com.hazelcast.jet.impl.pipeline.transform.BatchSourceTransform;
import com.hazelcast.jet.pipeline.BatchSource;
import com.hazelcast.jet.sql.impl.connector.SqlConnector;
import com.hazelcast.sql.impl.schema.MappingField;
import com.hazelcast.spi.impl.NodeEngine;
import com.hazelcast.sql.impl.expression.Expression;
import com.hazelcast.sql.impl.schema.Table;
import com.hazelcast.sql.impl.schema.TableField;
import com.hazelcast.sql.impl.type.QueryDataType;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.List;
import java.util.Map;
import static java.util.Collections.singletonList;
class SeriesSqlConnector implements SqlConnector {
static final SeriesSqlConnector INSTANCE = new SeriesSqlConnector();
private static final String TYPE_NAME = "Series";
private static final List FIELDS = singletonList(new TableField("v", QueryDataType.INT, false));
@Override
public String typeName() {
return TYPE_NAME;
}
@Override
public boolean isStream() {
return false;
}
@Nonnull
@Override
public List resolveAndValidateFields(
@Nonnull NodeEngine nodeEngine,
@Nonnull Map options,
@Nonnull List userFields
) {
throw new UnsupportedOperationException("Resolving fields not supported for " + typeName());
}
@Nonnull
@Override
public Table createTable(
@Nonnull NodeEngine nodeEngine,
@Nonnull String schemaName,
@Nonnull String name,
@Nonnull String externalName,
@Nonnull Map options,
@Nonnull List resolvedFields
) {
throw new UnsupportedOperationException("Creating table not supported for " + typeName());
}
@Nonnull
@SuppressWarnings("SameParameterValue")
static SeriesTable createTable(String schemaName, String name, List> argumentExpressions) {
return new SeriesTable(INSTANCE, FIELDS, schemaName, name, argumentExpressions);
}
@Nonnull
@Override
public Vertex fullScanReader(
@Nonnull DAG dag,
@Nonnull Table table0,
@Nullable Expression predicate,
@Nonnull List> projections
) {
SeriesTable table = (SeriesTable) table0;
BatchSource