com.qwazr.database.store.QueryContext Maven / Gradle / Ivy
/*
* Copyright 2015-2018 Emmanuel Keller / QWAZR
*
* 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.qwazr.database.store;
import com.qwazr.database.model.ColumnDefinition;
import com.qwazr.database.model.InternalColumnDefinition;
import com.qwazr.database.store.keys.ColumnIndexKey;
import com.qwazr.database.store.keys.ColumnStoreKey;
import com.qwazr.database.store.keys.PrimaryIdsKey;
import com.qwazr.server.ServerException;
import org.roaringbitmap.RoaringBitmap;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.util.Map;
public class QueryContext {
final KeyStore store;
final Map columns;
QueryContext(final KeyStore store, final Map columns) {
this.store = store;
this.columns = columns;
}
public final RoaringBitmap getIndexedBitset(final String columnName, final Object value) throws IOException {
final InternalColumnDefinition colDef = columns.get(columnName);
if (colDef == null)
throw new ServerException(Response.Status.NOT_ACCEPTABLE, "Unknown column: " + columnName);
if (colDef.mode != ColumnDefinition.Mode.INDEXED)
throw new ServerException(Response.Status.NOT_ACCEPTABLE, "The column is not indexed: " + columnName);
return ColumnIndexKey.newInstance(colDef, value).getValue(store);
}
public final CollectorInterface newFacetCollector(final CollectorInterface collector, final String columnName,
final Map facetMap) {
return collector.facets(this, columns.get(columnName), facetMap);
}
public Integer getExistingDocId(final String key) throws IOException {
return new PrimaryIdsKey(key).getValue(store);
}
public void consumeFirstValue(final String columnName, final int docId, final ValueConsumer consumer)
throws IOException {
ColumnStoreKey.newInstance(columns.get(columnName), docId).forFirst(store, consumer);
}
}