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Diffstat (limited to 'src/de/lmu/ifi/dbs/elki/parallel/processor/WriteDoubleDataStoreProcessor.java')
-rw-r--r-- | src/de/lmu/ifi/dbs/elki/parallel/processor/WriteDoubleDataStoreProcessor.java | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/parallel/processor/WriteDoubleDataStoreProcessor.java b/src/de/lmu/ifi/dbs/elki/parallel/processor/WriteDoubleDataStoreProcessor.java new file mode 100644 index 00000000..f8bf5b74 --- /dev/null +++ b/src/de/lmu/ifi/dbs/elki/parallel/processor/WriteDoubleDataStoreProcessor.java @@ -0,0 +1,106 @@ +package de.lmu.ifi.dbs.elki.parallel.processor; + +/* + This file is part of ELKI: + Environment for Developing KDD-Applications Supported by Index-Structures + + Copyright (C) 2014 + Ludwig-Maximilians-Universität München + Lehr- und Forschungseinheit für Datenbanksysteme + ELKI Development Team + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +import de.lmu.ifi.dbs.elki.database.datastore.WritableDoubleDataStore; +import de.lmu.ifi.dbs.elki.database.ids.DBIDRef; +import de.lmu.ifi.dbs.elki.parallel.Executor; +import de.lmu.ifi.dbs.elki.parallel.variables.SharedDouble; + +/** + * Write double values into a {@link WritableDoubleDataStore}. + * + * @author Erich Schubert + * + * @apiviz.has Instance + * @apiviz.uses SharedDouble + * @apiviz.uses WritableDoubleDataStore + */ +public class WriteDoubleDataStoreProcessor implements Processor { + /** + * Store to write to + */ + WritableDoubleDataStore store; + + /** + * Shared double variable + */ + SharedDouble input; + + /** + * Constructor. + * + * @param store Data store to write to + */ + public WriteDoubleDataStoreProcessor(WritableDoubleDataStore store) { + super(); + this.store = store; + } + + /** + * Connect the input variable + * + * @param input Input variable + */ + public void connectInput(SharedDouble input) { + this.input = input; + } + + @Override + public Instance instantiate(Executor executor) { + return new Instance(executor.getInstance(input)); + } + + @Override + public void cleanup(Processor.Instance inst) { + // Nothing to do. + } + + /** + * Instance for a sub-channel. + * + * @author Erich Schubert + */ + public class Instance implements Processor.Instance { + /** + * Shared double variable + */ + SharedDouble.Instance input; + + /** + * Constructor. + * + * @param input Input + */ + public Instance(SharedDouble.Instance input) { + super(); + this.input = input; + } + + @Override + public void map(DBIDRef id) { + store.putDouble(id, input.doubleValue()); + } + } +} |