ingo@1127: /*
ingo@1127:  * Copyright (c) 2010 by Intevation GmbH
ingo@1127:  *
ingo@1127:  * This program is free software under the LGPL (>=v2.1)
ingo@1127:  * Read the file LGPL.txt coming with the software for details
ingo@1127:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@1127:  */
ingo@1127: 
tim@132: package de.intevation.gnv.geobackend.base;
tim@132: 
tim@132: import java.util.ArrayList;
tim@271: import java.util.HashMap;
tim@132: import java.util.List;
tim@271: import java.util.Map;
tim@132: 
tim@132: /**
tim@132:  * This Class is the DefaultImplementation of the
tim@132:  * Interface ResultDescriptor
sascha@887:  * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
tim@132:  *
tim@132:  */
tim@132: public class DefaultResultDescriptor implements ResultDescriptor {
tim@132: 
tim@132:     /**
tim@141:      *The Uid of this Class
tim@141:      */
tim@141:     private static final long serialVersionUID = 7016889733270716130L;
tim@141:     /**
tim@132:      * The Names of the Columns of one Result
tim@132:      */
tim@132:     private List<String> columnNames = new ArrayList<String>();
tim@132:     /**
tim@132:      * The Name of the Classes of the Values of one Result.
tim@132:      */
tim@132:     private List<String> columnClassNames = new ArrayList<String>();
tim@271:     /**
tim@884:      * The Lookup for the Columnindex of the Columnnames
tim@271:      */
tim@271:     private Map<String, Integer> columnIndexLookup = new HashMap<String, Integer>();
sascha@885: 
tim@132:     /**
tim@132:      * Constructor
tim@132:      */
tim@132:     public DefaultResultDescriptor() {
tim@132:         super();
tim@132:     }
tim@132: 
tim@132:     /**
tim@132:      * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnClassName(int)
tim@132:      */
tim@132:     public String getColumnClassName(int column) {
tim@132:         return this.columnClassNames.get(column);
tim@132:     }
tim@132: 
tim@132:     /**
tim@132:      * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnCount()
tim@132:      */
tim@132:     public int getColumnCount() {
tim@132:         return this.columnClassNames.size();
tim@132:     }
tim@132: 
tim@132:     /**
tim@132:      * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnName(int)
tim@132:      */
tim@132:     public String getColumnName(int column) {
tim@132:         return this.columnNames.get(column);
tim@132:     }
tim@132: 
tim@132:     /**
tim@132:      * @see de.intevation.gnv.geobackend.base.ResultDescriptor#addColumn(java.lang.String, java.lang.String)
tim@132:      */
tim@132:     public void addColumn(String name, String className) {
tim@132:         this.columnClassNames.add(className);
tim@132:         this.columnNames.add(name);
tim@271:         this.columnIndexLookup.put(name,this.columnNames.size()-1);
tim@132:     }
tim@132: 
tim@271:     /**
tim@271:      * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnIndices(java.lang.String[])
tim@271:      */
tim@271:     public int [] getColumnIndices(String [] columnNames) {
tim@271:         if (columnNames == null) {
tim@271:             return null;
tim@271:         }
tim@271:         int [] indices = new int[columnNames.length];
tim@271:         for (int i = 0; i < indices.length; ++i) {
tim@271:             indices[i] = this.getColumnIndex(columnNames[i]);
tim@271:         }
tim@271:         return indices;
tim@271:     }
tim@271: 
tim@271:     /**
tim@271:      * @see de.intevation.gnv.geobackend.base.ResultDescriptor#getColumnIndex(java.lang.String)
tim@271:      */
tim@271:     public int getColumnIndex(String columnName) {
sascha@885: 
tim@271:         Integer value = this.columnIndexLookup.get(columnName);
sascha@381:         return value != null ? value.intValue() : -1;
tim@271:     }
sascha@553: 
tim@884:     /**
tim@884:      * @see java.lang.Object#toString()
tim@884:      */
tim@884:     @Override
sascha@553:     public String toString() {
sascha@553:         StringBuilder sb = new StringBuilder("[");
sascha@553:         int N = Math.min(columnNames.size(), columnClassNames.size());
sascha@553:         for (int i = 0; i < N; ++i) {
sascha@553:             if (i > 0) {
sascha@553:                 sb.append(", ");
sascha@553:             }
sascha@553:             sb.append(columnNames.get(i))
sascha@553:               .append(": ")
sascha@553:               .append(columnClassNames.get(i));
sascha@553:         }
sascha@553:         sb.append(']');
sascha@553:         return sb.toString();
sascha@553:     }
tim@271: }