com.hazelcast.org.apache.calcite.sql.dialect.VerticaSqlDialect Maven / Gradle / Ivy
/*
* 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.org.apache.calcite.sql.dialect;
import com.hazelcast.org.apache.calcite.avatica.util.Casing;
import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.sql.SqlDialect;
import com.hazelcast.org.apache.calcite.sql.SqlOperator;
import java.util.List;
/**
* A SqlDialect
implementation for the Vertica database.
*/
public class VerticaSqlDialect extends SqlDialect {
public static final SqlDialect.Context DEFAULT_CONTEXT = SqlDialect.EMPTY_CONTEXT
.withDatabaseProduct(SqlDialect.DatabaseProduct.VERTICA)
.withIdentifierQuoteString("\"")
.withUnquotedCasing(Casing.UNCHANGED);
public static final SqlDialect DEFAULT = new VerticaSqlDialect(DEFAULT_CONTEXT);
/** Creates a VerticaSqlDialect. */
public VerticaSqlDialect(Context context) {
super(context);
}
@Override public boolean supportsNestedAggregations() {
return false;
}
@Override public boolean supportsFunction(SqlOperator operator,
RelDataType type, final List paramTypes) {
switch (operator.kind) {
case LIKE:
// introduces support for ILIKE as well
return true;
default:
return super.supportsFunction(operator, type, paramTypes);
}
}
}
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