com.facebook.presto.jdbc.internal.spi.security.ViewAccessControl Maven / Gradle / Ivy

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/*
 * Licensed 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.facebook.presto.jdbc.internal.spi.security;

import com.facebook.presto.jdbc.internal.common.QualifiedObjectName;
import com.facebook.presto.jdbc.internal.common.Subfield;
import com.facebook.presto.jdbc.internal.common.transaction.TransactionId;

import java.util.Collections;
import java.util.Set;

import static java.util.Objects.requireNonNull;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toSet;

public class ViewAccessControl
        extends DenyAllAccessControl
{
    private final AccessControl delegate;

    public ViewAccessControl(AccessControl delegate)
    {
        this.delegate = requireNonNull(delegate, "delegate is null");
    }

    @Override
    public void checkCanSelectFromColumns(TransactionId transactionId, Identity identity, AccessControlContext context, QualifiedObjectName tableName, Set columnOrSubfieldNames)
    {
        delegate.checkCanCreateViewWithSelectFromColumns(transactionId, identity, context, tableName, columnOrSubfieldNames.stream().map(Subfield::getRootName).collect(collectingAndThen(toSet(), Collections::unmodifiableSet)));
    }

    @Override
    public void checkCanCreateViewWithSelectFromColumns(TransactionId transactionId, Identity identity, AccessControlContext context, QualifiedObjectName tableName, Set columnNames)
    {
        delegate.checkCanCreateViewWithSelectFromColumns(transactionId, identity, context, tableName, columnNames);
    }
}