2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 ONAP
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.sdnc.sli.SliPluginUtils;
23 import java.util.ArrayList;
24 import java.util.HashMap;
25 import java.util.HashSet;
26 import java.util.ListIterator;
29 import org.apache.commons.lang3.StringUtils;
30 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
33 * A utility class used to manage list manipulation in the context memory.
34 * @see org.onap.ccsdk.sli.core.sli.SvcLogicContext
36 public class SvcLogicContextList {
38 * Internal flag indicating if list should be deleted from context memory
39 * when it is copied into the SvcLogicContextList object.
41 private enum OperType {
46 protected final String prefix;
48 protected final ArrayList<HashMap<String,String>> list;
52 public SvcLogicContextList( SvcLogicContext ctx, String list_prefix ) {
53 this(ctx, list_prefix, OperType.COPY);
57 private SvcLogicContextList( SvcLogicContext ctx, String list_prefix, OperType operation ) {
58 this.prefix = list_prefix;
61 int capacity = getCtxListLength(ctx, prefix);
62 this.list = new ArrayList<HashMap<String, String>>(capacity);
63 for( int i = 0; i < capacity; i++ ) {
64 this.list.add(i, new HashMap<String,String>());
67 // Populate "elements" in list
68 String prefix_bracket = this.prefix + '[';
69 for (String key : new HashSet<String>(ctx.getAttributeKeySet())) {
70 if( key.startsWith(prefix_bracket) ) {
71 // Extract the index of the list
72 int index = getCtxListIndex(key, this.prefix, capacity);
75 String suffix = key.substring((prefix_bracket + index + ']').length());
76 suffix = suffix.isEmpty() ? suffix : suffix.substring(1);
77 this.list.get(index).put( suffix, ctx.getAttribute(key));
79 // If flag to extract set, remove data from context memory as
80 // it is read into this list
81 if( operation == OperType.EXTRACT ) {
82 ctx.setAttribute(key, null);
87 // If flag to extract set, remove list _length value from cxt mem
88 if( operation == OperType.EXTRACT ) {
89 ctx.setAttribute(this.prefix + "_length", null);
94 public static SvcLogicContextList extract( SvcLogicContext ctx, String list_prefix ) {
95 return new SvcLogicContextList(ctx, list_prefix, OperType.EXTRACT);
99 // ========== PUBLIC FUNCTIONS ==========
102 public HashMap<String,String> get( int index ) {
103 return this.list.get(index);
107 public HashMap<String,String> remove( int index ) {
108 return this.list.remove(index);
112 public void remove( String value ) {
117 public void remove( String key, String value ) {
118 if( value == null ) {
119 throw new IllegalArgumentException("value cannot be null");
122 ListIterator<HashMap<String,String>> itr = this.list.listIterator();
123 while( itr.hasNext() ) {
124 if( value.equals(itr.next().get(key)) ) {
131 public void remove( Map<String,String> primary_key ) {
132 ListIterator<HashMap<String,String>> itr = this.list.listIterator();
133 while( itr.hasNext() ) {
134 boolean found = true;
135 HashMap<String,String> list_element = itr.next();
136 for( Map.Entry<String,String> key : primary_key.entrySet() ) {
137 if( !key.getValue().equals(list_element.get(key.getKey())) ) {
155 public void writeToContext( SvcLogicContext ctx ) {
156 ctx.setAttribute( prefix + "_length", Integer.toString(this.list.size()) );
158 for( int i = 0; i < this.list.size(); i++ ) {
159 for( Map.Entry<String,String> entry : this.list.get(i).entrySet() ) {
160 if( entry.getKey().equals("") ) {
161 ctx.setAttribute(prefix + '[' + i + ']', entry.getValue());
163 ctx.setAttribute(prefix + '[' + i + "]." + entry.getKey(), entry.getValue());
171 // ========== PRIVATE STATIC FUNCTIONS ==========
174 private static int getCtxListIndex( String key, String prefix, int list_size ) {
175 int index = getCtxListIndex( key, prefix );
176 if( index >= list_size ) {
177 throw new IllegalArgumentException("Context memory list \"" + prefix + "[]\" contains an index >= the size of the list", new ArrayIndexOutOfBoundsException("index \"" + index + "\" is outside the bounds of the context memory list \"" + prefix + "[]. List Length = " + list_size));
178 } else if (index < 0) {
179 throw new IllegalArgumentException("Context memory list \"" + prefix + "[]\" contains a negative index", new NegativeArraySizeException("index \"" + index + "\" of context memory list is negative"));
186 private static int getCtxListIndex( String key, String prefix ) {
187 String ctx_index_str = StringUtils.substringBetween(key.substring(prefix.length()), "[", "]");
189 return Integer.parseInt( ctx_index_str );
190 } catch (NumberFormatException e) {
191 throw new IllegalStateException("Could not parse index value \"" + ctx_index_str + "\" in context memory key \"" + key + "\"", e);
196 private static int getCtxListLength( SvcLogicContext ctx, String prefix ) {
197 String _length_key = prefix + "_length";
198 String _length_val_str = ctx.getAttribute(_length_key);
200 return Integer.parseInt(_length_val_str);
201 } catch (NumberFormatException e) {
202 if( _length_val_str == null ) {
203 throw new IllegalStateException( "Could not find list length \"" + _length_key + "\" in context memory." );
205 throw new IllegalStateException( "Could not parse index value \"" + _length_val_str + "\" of context memory list length \"" + _length_key + "\"" , e );