com.hazelcast.org.apache.calcite.sql.type.ComparableOperandTypeChecker 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 com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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.type;
import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.rel.type.RelDataTypeComparability;
import com.hazelcast.org.apache.calcite.sql.SqlCallBinding;
import com.hazelcast.org.apache.calcite.sql.SqlOperatorBinding;
import com.hazelcast.org.apache.calcite.sql.validate.implicit.TypeCoercion;
import java.util.Objects;
/**
* Type checking strategy which verifies that types have the required attributes
* to be used as arguments to com.hazelcast.com.arison operators.
*/
public class ComparableOperandTypeChecker extends SameOperandTypeChecker {
//~ Instance fields --------------------------------------------------------
private final RelDataTypeComparability requiredComparability;
private final Consistency consistency;
//~ Constructors -----------------------------------------------------------
@Deprecated // to be removed before 2.0
public ComparableOperandTypeChecker(int nOperands,
RelDataTypeComparability requiredComparability) {
this(nOperands, requiredComparability, Consistency.NONE);
}
public ComparableOperandTypeChecker(int nOperands,
RelDataTypeComparability requiredComparability, Consistency consistency) {
super(nOperands);
this.requiredComparability = requiredComparability;
this.consistency = Objects.requireNonNull(consistency);
}
//~ Methods ----------------------------------------------------------------
public boolean checkOperandTypes(
SqlCallBinding callBinding,
boolean throwOnFailure) {
boolean b = true;
for (int i = 0; i < nOperands; ++i) {
RelDataType type = callBinding.getOperandType(i);
if (!checkType(callBinding, throwOnFailure, type)) {
b = false;
break;
}
}
if (b) {
// Coerce type first.
if (callBinding.isTypeCoercionEnabled()) {
TypeCoercion typeCoercion = callBinding.getValidator().getTypeCoercion();
// For com.hazelcast.com.arison operators, i.e. >, <, =, >=, <=.
typeCoercion.binaryComparisonCoercion(callBinding);
}
b = super.checkOperandTypes(callBinding, false);
}
if (!b && throwOnFailure) {
throw callBinding.newValidationSignatureError();
}
return b;
}
private boolean checkType(
SqlCallBinding callBinding,
boolean throwOnFailure,
RelDataType type) {
if (type.getComparability().ordinal()
< requiredComparability.ordinal()) {
if (throwOnFailure) {
throw callBinding.newValidationSignatureError();
} else {
return false;
}
} else {
return true;
}
}
/**
* Similar functionality to
* {@link #checkOperandTypes(SqlCallBinding, boolean)}, but not part of the
* interface, and cannot throw an error.
*/
public boolean checkOperandTypes(
SqlOperatorBinding operatorBinding, SqlCallBinding callBinding) {
boolean b = true;
for (int i = 0; i < nOperands; ++i) {
RelDataType type = callBinding.getOperandType(i);
if (type.getComparability().ordinal() < requiredComparability.ordinal()) {
b = false;
break;
}
}
if (b) {
b = super.checkOperandTypes(operatorBinding, callBinding);
}
return b;
}
@Override protected String getTypeName() {
return "COMPARABLE_TYPE";
}
@Override public Consistency getConsistency() {
return consistency;
}
}