/*
* 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.metadata;
import com.facebook.presto.spi.ConnectorColumnHandle;
import com.facebook.presto.spi.ConnectorHandleResolver;
import com.facebook.presto.spi.ConnectorIndexHandle;
import com.facebook.presto.spi.ConnectorSplit;
import com.facebook.presto.spi.ConnectorTableHandle;
import javax.inject.Inject;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
public class HandleResolver
{
private final ConcurrentMap<String, ConnectorHandleResolver> handleIdResolvers = new ConcurrentHashMap<>();
public HandleResolver()
{
}
@Inject
public HandleResolver(Map<String, ConnectorHandleResolver> handleIdResolvers)
{
this.handleIdResolvers.putAll(handleIdResolvers);
}
public void addHandleResolver(String id, ConnectorHandleResolver connectorHandleResolver)
{
ConnectorHandleResolver existingResolver = handleIdResolvers.putIfAbsent(id, connectorHandleResolver);
checkState(existingResolver == null, "Id %s is already assigned to resolver %s", id, existingResolver);
}
public String getId(ConnectorTableHandle tableHandle)
{
for (Entry<String, ConnectorHandleResolver> entry : handleIdResolvers.entrySet()) {
if (entry.getValue().canHandle(tableHandle)) {
return entry.getKey();
}
}
throw new IllegalArgumentException("No connector for table handle: " + tableHandle);
}
public String getId(ConnectorColumnHandle columnHandle)
{
for (Entry<String, ConnectorHandleResolver> entry : handleIdResolvers.entrySet()) {
if (entry.getValue().canHandle(columnHandle)) {
return entry.getKey();
}
}
throw new IllegalArgumentException("No connector for column handle: " + columnHandle);
}
public String getId(ConnectorSplit split)
{
for (Entry<String, ConnectorHandleResolver> entry : handleIdResolvers.entrySet()) {
if (entry.getValue().canHandle(split)) {
return entry.getKey();
}
}
throw new IllegalArgumentException("No connector for split: " + split);
}
public String getId(ConnectorIndexHandle indexHandle)
{
for (Entry<String, ConnectorHandleResolver> entry : handleIdResolvers.entrySet()) {
if (entry.getValue().canHandle(indexHandle)) {
return entry.getKey();
}
}
throw new IllegalArgumentException("No connector for index handle: " + indexHandle);
}
public Class<? extends ConnectorTableHandle> getTableHandleClass(String id)
{
ConnectorHandleResolver connectorHandleResolver = handleIdResolvers.get(id);
checkArgument(connectorHandleResolver != null, "No handle resolver for %s", id);
return connectorHandleResolver.getTableHandleClass();
}
public Class<? extends ConnectorColumnHandle> getColumnHandleClass(String id)
{
ConnectorHandleResolver connectorHandleResolver = handleIdResolvers.get(id);
checkArgument(connectorHandleResolver != null, "No handle resolver for %s", id);
return connectorHandleResolver.getColumnHandleClass();
}
public Class<? extends ConnectorSplit> getSplitClass(String id)
{
ConnectorHandleResolver connectorHandleResolver = handleIdResolvers.get(id);
checkArgument(connectorHandleResolver != null, "No handle resolver for %s", id);
return connectorHandleResolver.getSplitClass();
}
public Class<? extends ConnectorIndexHandle> getIndexHandleClass(String id)
{
ConnectorHandleResolver connectorHandleResolver = handleIdResolvers.get(id);
checkArgument(connectorHandleResolver != null, "No handle resolver for %s", id);
return connectorHandleResolver.getIndexHandleClass();
}
}