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* 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.datastax.oss.driver.internal.core.cql;
import com.datastax.oss.driver.api.core.PagingIterable;
import com.datastax.oss.driver.api.core.cql.AsyncResultSet;
import com.datastax.oss.driver.api.core.cql.ColumnDefinitions;
import com.datastax.oss.driver.api.core.cql.ExecutionInfo;
import com.datastax.oss.driver.api.core.cql.ResultSet;
import com.datastax.oss.driver.api.core.cql.Row;
import com.datastax.oss.driver.internal.core.PagingIterableWrapper;
import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableList;
import edu.umd.cs.findbugs.annotations.NonNull;
import java.util.Iterator;
import java.util.List;
import java.util.Spliterator;
import java.util.function.Function;
import net.jcip.annotations.NotThreadSafe;
@NotThreadSafe
public class SinglePageResultSet implements ResultSet {
private final AsyncResultSet onlyPage;
public SinglePageResultSet(AsyncResultSet onlyPage) {
this.onlyPage = onlyPage;
assert !onlyPage.hasMorePages();
}
@NonNull
@Override
public ColumnDefinitions getColumnDefinitions() {
return onlyPage.getColumnDefinitions();
}
@NonNull
@Override
public ExecutionInfo getExecutionInfo() {
return onlyPage.getExecutionInfo();
}
@NonNull
@Override
public List getExecutionInfos() {
// Assuming this will be called 0 or 1 time, avoid creating the list if it's 0.
return ImmutableList.of(onlyPage.getExecutionInfo());
}
@Override
public boolean isFullyFetched() {
return true;
}
@Override
public int getAvailableWithoutFetching() {
return onlyPage.remaining();
}
@NonNull
@Override
public Iterator iterator() {
return onlyPage.currentPage().iterator();
}
@NonNull
@Override
public Spliterator spliterator() {
return PagingIterableSpliterator.builder(this)
.withEstimatedSize(getAvailableWithoutFetching())
.build();
}
@NonNull
@Override
public PagingIterable map(
Function elementMapper) {
return new PagingIterableWrapper<>(this, elementMapper, true);
}
@Override
public boolean wasApplied() {
return onlyPage.wasApplied();
}
}