com.hazelcast.jet.sql.impl.validate.ValidationUtil Maven / Gradle / Ivy
/*
* Copyright 2024 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.validate;
import com.hazelcast.shaded.org.apache.calcite.rex.RexCall;
import com.hazelcast.shaded.org.apache.calcite.rex.RexNode;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlCall;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlIdentifier;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlKind;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlNode;
import static com.hazelcast.sql.impl.QueryUtils.CATALOG;
import static com.hazelcast.sql.impl.QueryUtils.SCHEMA_NAME_PUBLIC;
import static com.hazelcast.shaded.org.apache.calcite.sql.SqlKind.ARGUMENT_ASSIGNMENT;
import static com.hazelcast.shaded.org.apache.calcite.sql.SqlKind.AS;
public final class ValidationUtil {
private ValidationUtil() {
}
public static boolean hasAssignment(SqlCall call) {
for (SqlNode operand : call.getOperandList()) {
if (operand != null
&& operand.getKind() == SqlKind.ARGUMENT_ASSIGNMENT) {
return true;
}
}
return false;
}
/**
* If the operand is an ARGUMENT_ASSIGNMENT, returns its target.
* Otherwise return the operand.
*/
public static SqlNode unwrapFunctionOperand(SqlNode operand) {
return operand.getKind() == ARGUMENT_ASSIGNMENT ? ((SqlCall) operand).operand(0) : operand;
}
/**
* If the operand is an AS call, returns its target. Otherwise
* return the operand.
*/
public static RexNode unwrapAsOperatorOperand(RexNode operand) {
return operand.getKind() == AS ? ((RexCall) operand).getOperands().get(0) : operand;
}
/**
* Returns true if the view name is in a valid schema,
* that is it must be either:
*
* - a simple name
*
- a name in schema "public"
*
- a name in schema "hazelcast.public"
*
*/
@SuppressWarnings({"checkstyle:BooleanExpressionComplexity", "BooleanMethodIsAlwaysInverted"})
public static boolean isCatalogObjectNameValid(SqlIdentifier name) {
return name.names.size() == 1
|| name.names.size() == 2 && SCHEMA_NAME_PUBLIC.equals(name.names.get(0))
|| name.names.size() == 3 && CATALOG.equals(name.names.get(0))
&& SCHEMA_NAME_PUBLIC.equals(name.names.get(1));
}
}
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