| package org.apache.samoa.instances; |
| |
| /* |
| * #%L |
| * SAMOA |
| * %% |
| * Copyright (C) 2014 - 2015 Apache Software Foundation |
| * %% |
| * 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. |
| * #L% |
| */ |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class AttributesInformation implements Serializable { |
| |
| /** |
| * The attribute information. |
| */ |
| protected List<Attribute> attributes; |
| protected List<Integer> indexValues; |
| /** |
| * The number of attributes. |
| */ |
| protected int numberAttributes; |
| |
| /** |
| * The attribute used for default for numerical values |
| */ |
| protected Attribute defaultNumericAttribute; |
| |
| public AttributesInformation(AttributesInformation chunk) { |
| this.attributes = chunk.attributes; |
| this.indexValues = chunk.indexValues; |
| this.numberAttributes = chunk.numberAttributes; |
| } |
| |
| public AttributesInformation(List<Attribute> v, List<Integer> i, int numberAttributes) { |
| this.attributes = v; |
| this.indexValues = i; |
| this.numberAttributes = numberAttributes; |
| } |
| |
| public AttributesInformation(List<Attribute> v, int numberAttributes) { |
| this.attributes = v; |
| this.indexValues = new ArrayList<Integer>(numberAttributes); |
| for (int i = 0; i < numberAttributes; i++) { |
| this.indexValues.add(i); |
| } |
| this.numberAttributes = numberAttributes; |
| } |
| |
| public AttributesInformation() { |
| this.attributes = null; |
| this.indexValues = null; |
| this.numberAttributes = 0; |
| this.defaultNumericAttribute = null; |
| } |
| |
| /** |
| * Attribute. |
| * |
| * @param indexAttribute the index Attribute |
| * @return the attribute |
| */ |
| public Attribute attribute(int indexAttribute) { |
| if (this.attributes == null) { |
| //All attributes are numeric |
| return defaultNumericAttribute(); |
| } |
| int location = locateIndex(indexAttribute); |
| if (location == -1) { |
| //if there is not attribute information, it is numeric |
| return defaultNumericAttribute(); |
| } |
| return attributes.get(location); |
| } |
| |
| public void add(Attribute attribute, int value) { |
| this.attributes.add(attribute); |
| this.indexValues.add(value); |
| } |
| |
| /** |
| * Sets the attribute information. |
| * |
| * @param v the new attribute information |
| */ |
| public void setAttributes(List<Attribute> v) { |
| this.attributes = v; |
| this.numberAttributes=v.size(); |
| } |
| |
| /** |
| * Locates the greatest index that is not greater than the given index. |
| * |
| * @return the internal index of the attribute index. Returns -1 if no index |
| * with this property could be found |
| */ |
| public int locateIndex(int index) { |
| |
| int min = 0; |
| int max = this.indexValues.size() - 1; |
| |
| if (max == -1) { |
| return -1; |
| } |
| |
| // Binary search |
| while ((this.indexValues.get(min) <= index) && (this.indexValues.get(max) >= index)) { |
| int current = (max + min) / 2; |
| if (this.indexValues.get(current) > index) { |
| max = current - 1; |
| } else if (this.indexValues.get(current) < index) { |
| min = current + 1; |
| } else { |
| return current; |
| } |
| } |
| if (this.indexValues.get(max) < index) { |
| return max; |
| } else { |
| return min - 1; |
| } |
| } |
| |
| private Attribute defaultNumericAttribute() { |
| if (this.defaultNumericAttribute == null) { |
| this.defaultNumericAttribute = new Attribute("default"); |
| } |
| return this.defaultNumericAttribute; |
| } |
| |
| public void setAttributes(List<Attribute> v, List<Integer> indexValues) { |
| this.attributes = v; |
| this.numberAttributes=v.size(); |
| this.indexValues=indexValues; |
| } |
| |
| public void deleteAttributeAt(Integer position) { |
| if ((position < 0) || (position >= attributes.size())) { |
| throw new IllegalArgumentException("Index out of range"); |
| } |
| |
| ArrayList<Attribute> newList = new ArrayList<Attribute>(attributes.size() - 1); |
| for (int i = 0 ; i < position; i++) { |
| Attribute att = attributes.get(i); |
| newList.add(att); |
| } |
| for (int i = position + 1; i < attributes.size(); i++) { |
| Attribute newAtt = (Attribute) attributes.get(i); |
| newList.add(newAtt); |
| } |
| attributes = newList; |
| } |
| |
| public void insertAttributeAt(Attribute att, int position) { |
| |
| if ((position < 0) || (position > attributes.size())) { |
| throw new IllegalArgumentException("Index out of range"); |
| } |
| |
| ArrayList<Attribute> newList = new ArrayList<Attribute>(attributes.size() + 1); |
| for (int i = 0 ; i < position; i++) { |
| Attribute oldAtt = attributes.get(i); |
| newList.add(oldAtt); |
| } |
| newList.add(att); |
| for (int i = position; i < attributes.size(); i++) { |
| Attribute newAtt = (Attribute) attributes.get(i); |
| newList.add(newAtt); |
| } |
| attributes = newList; |
| |
| } |
| |
| } |