com.hazelcast.jet.sql.impl.aggregate.function.HazelcastJsonArrayAggFunction 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.aggregate.function;
import com.hazelcast.jet.sql.impl.validate.HazelcastCallBinding;
import com.hazelcast.jet.sql.impl.validate.operators.common.HazelcastAggFunction;
import com.hazelcast.jet.sql.impl.validate.operators.typeinference.ReplaceUnknownOperandTypeInference;
import com.hazelcast.jet.sql.impl.validate.types.HazelcastJsonType;
import com.hazelcast.org.apache.calcite.sql.SqlFunctionCategory;
import com.hazelcast.org.apache.calcite.sql.SqlJsonConstructorNullClause;
import com.hazelcast.org.apache.calcite.sql.SqlKind;
import com.hazelcast.org.apache.calcite.sql.SqlOperandCountRange;
import com.hazelcast.org.apache.calcite.sql.type.SqlOperandCountRanges;
import com.hazelcast.org.apache.calcite.sql.type.SqlTypeName;
import com.hazelcast.org.apache.calcite.util.Optionality;
public class HazelcastJsonArrayAggFunction extends HazelcastAggFunction {
public static final HazelcastJsonArrayAggFunction ABSENT_ON_NULL_INSTANCE
= new HazelcastJsonArrayAggFunction(SqlJsonConstructorNullClause.ABSENT_ON_NULL);
public static final HazelcastJsonArrayAggFunction NULL_ON_NULL_INSTANCE
= new HazelcastJsonArrayAggFunction(SqlJsonConstructorNullClause.NULL_ON_NULL);
private final SqlJsonConstructorNullClause nullClause;
protected HazelcastJsonArrayAggFunction(SqlJsonConstructorNullClause nullClause) {
super(
"JSON_ARRAYAGG_" + nullClause.name(),
SqlKind.JSON_ARRAYAGG,
opBinding -> HazelcastJsonType.create(true),
new ReplaceUnknownOperandTypeInference(SqlTypeName.ANY),
null,
SqlFunctionCategory.SYSTEM,
false,
false,
Optionality.OPTIONAL
);
this.nullClause = nullClause;
}
@Override
protected boolean checkOperandTypes(HazelcastCallBinding callBinding, boolean throwOnFailure) {
return true;
}
public SqlOperandCountRange getOperandCountRange() {
return SqlOperandCountRanges.from(1);
}
public boolean isAbsentOnNull() {
return nullClause == SqlJsonConstructorNullClause.ABSENT_ON_NULL;
}
}
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