| package org.apache.rya.indexing.accumulo.entity; |
| |
| /* |
| * 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. |
| */ |
| |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Map.Entry; |
| import java.util.NoSuchElementException; |
| import java.util.Set; |
| |
| import org.apache.accumulo.core.client.AccumuloException; |
| import org.apache.accumulo.core.client.AccumuloSecurityException; |
| import org.apache.accumulo.core.client.BatchScanner; |
| import org.apache.accumulo.core.client.Connector; |
| import org.apache.accumulo.core.client.TableNotFoundException; |
| import org.apache.accumulo.core.data.Key; |
| import org.apache.accumulo.core.data.Range; |
| import org.apache.accumulo.core.data.Value; |
| import org.apache.accumulo.core.security.Authorizations; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.Text; |
| import org.apache.rya.indexing.accumulo.ConfigUtils; |
| |
| public class EntityLocalityGroupSetter { |
| |
| |
| String tablePrefix; |
| Connector conn; |
| Configuration conf; |
| |
| public EntityLocalityGroupSetter(String tablePrefix, Connector conn, Configuration conf) { |
| this.conn = conn; |
| this.tablePrefix = tablePrefix; |
| this.conf = conf; |
| } |
| |
| |
| |
| private Iterator<String> getPredicates() { |
| |
| String auths = conf.get(ConfigUtils.CLOUDBASE_AUTHS); |
| BatchScanner bs = null; |
| try { |
| bs = conn.createBatchScanner(tablePrefix + "prospects", new Authorizations(auths), 10); |
| } catch (TableNotFoundException e) { |
| e.printStackTrace(); |
| throw new Error("Attempting to scan missing table: " + tablePrefix + "prospects", e); |
| } |
| bs.setRanges(Collections.singleton(Range.prefix(new Text("predicate" + "\u0000")))); |
| final Iterator<Entry<Key,Value>> iter = bs.iterator(); |
| |
| return new Iterator<String>() { |
| |
| private String next = null; |
| private boolean hasNextCalled = false; |
| private boolean isEmpty = false; |
| |
| @Override |
| public boolean hasNext() { |
| |
| if (!hasNextCalled && !isEmpty) { |
| while (iter.hasNext()) { |
| Entry<Key,Value> temp = iter.next(); |
| String row = temp.getKey().getRow().toString(); |
| String[] rowArray = row.split("\u0000"); |
| next = rowArray[1]; |
| |
| hasNextCalled = true; |
| return true; |
| } |
| isEmpty = true; |
| return false; |
| } else if(isEmpty) { |
| return false; |
| }else { |
| return true; |
| } |
| } |
| |
| @Override |
| public String next() { |
| |
| if (hasNextCalled) { |
| hasNextCalled = false; |
| return next; |
| } else if(isEmpty) { |
| throw new NoSuchElementException(); |
| }else { |
| if (this.hasNext()) { |
| hasNextCalled = false; |
| return next; |
| } else { |
| throw new NoSuchElementException(); |
| } |
| } |
| } |
| |
| @Override |
| public void remove() { |
| |
| throw new UnsupportedOperationException("Cannot delete from iterator!"); |
| |
| } |
| |
| }; |
| } |
| |
| |
| |
| |
| |
| |
| |
| |
| public void setLocalityGroups() { |
| |
| HashMap<String, Set<Text>> localityGroups = new HashMap<String, Set<Text>>(); |
| Iterator<String> groups = getPredicates(); |
| |
| int i = 1; |
| |
| while(groups.hasNext()) { |
| HashSet<Text> tempColumn = new HashSet<Text>(); |
| String temp = groups.next(); |
| tempColumn.add(new Text(temp)); |
| String groupName = "predicate" + i; |
| localityGroups.put(groupName, tempColumn); |
| i++; |
| } |
| |
| |
| try { |
| conn.tableOperations().setLocalityGroups(tablePrefix + "doc_partitioned_index", localityGroups); |
| //conn.tableOperations().compact(tablePrefix + "doc_partitioned_index", null, null, true, true); |
| } catch (AccumuloException e) { |
| e.printStackTrace(); |
| } catch (AccumuloSecurityException e) { |
| e.printStackTrace(); |
| } catch (TableNotFoundException e) { |
| e.printStackTrace(); |
| } |
| |
| |
| |
| } |
| |
| |
| |
| |
| |
| |
| |
| } |