org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/tmf/core/filter/model/TmfFilterNode.java

   1 /*******************************************************************************
   2  * Copyright (c) 2010, 2013 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Patrick Tasse - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.core.filter.model;
  14
  15 import java.util.ArrayList;
  16 import java.util.List;
  17
  18 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  19
  20 /**
  21  * Filter node for the event match operation
  22  *
  23  * @version 1.0
  24  * @author Patrick Tasse
  25  */
  26 @SuppressWarnings("javadoc")
  27 public class TmfFilterNode extends TmfFilterTreeNode {
  28
  29     public static final String NODE_NAME = "FILTER"; //$NON-NLS-1$
  30     public static final String NAME_ATTR = "name"; //$NON-NLS-1$
  31
  32     String fFilterName;
  33
  34     /**
  35      * @param filterName the filter name
  36      */
  37     public TmfFilterNode(String filterName) {
  38         super(null);
  39         fFilterName = filterName;
  40     }
  41
  42     /**
  43      * @param parent the parent node
  44      * @param filterName the filter name
  45      */
  46     public TmfFilterNode(ITmfFilterTreeNode parent, String filterName) {
  47         super(parent);
  48         fFilterName = filterName;
  49     }
  50
  51     /**
  52      * @return the filer name
  53      */
  54     public String getFilterName() {
  55         return fFilterName;
  56     }
  57
  58     /**
  59      * @param filterName the filer name
  60      */
  61     public void setFilterName(String filterName) {
  62         fFilterName = filterName;
  63     }
  64
  65     @Override
  66     public String getNodeName() {
  67         return NODE_NAME;
  68     }
  69
  70     @Override
  71     public boolean matches(ITmfEvent event) {
  72         // There should be at most one child
  73         for (ITmfFilterTreeNode node : getChildren()) {
  74             if (node.matches(event)) {
  75                 return true;
  76             }
  77         }
  78         return false;
  79     }
  80
  81     @Override
  82     public List<String> getValidChildren() {
  83         if (getChildrenCount() == 0) {
  84             return super.getValidChildren();
  85         }
  86         return new ArrayList<>(0); // only one child allowed
  87     }
  88
  89     @Override
  90     public String toString() {
  91         StringBuffer buf = new StringBuffer();
  92         if (getChildrenCount() > 1) {
  93             buf.append("( "); //$NON-NLS-1$
  94         }
  95         for (int i = 0; i < getChildrenCount(); i++) {
  96             ITmfFilterTreeNode node = getChildren()[i];
  97             buf.append(node.toString());
  98             if (i < (getChildrenCount() - 1)) {
  99                 buf.append(" and "); //$NON-NLS-1$
 100             }
 101         }
 102         if (getChildrenCount() > 1) {
 103             buf.append(" )"); //$NON-NLS-1$
 104         }
 105         return buf.toString();
 106     }
 107
 108     @Override
 109     public int hashCode() {
 110         final int prime = 31;
 111         int result = super.hashCode();
 112         result = prime * result + ((fFilterName == null) ? 0 : fFilterName.hashCode());
 113         return result;
 114     }
 115
 116     @Override
 117     public boolean equals(Object obj) {
 118         if (this == obj) {
 119             return true;
 120         }
 121         if (!super.equals(obj)) {
 122             return false;
 123         }
 124         if (getClass() != obj.getClass()) {
 125             return false;
 126         }
 127         TmfFilterNode other = (TmfFilterNode) obj;
 128         if (fFilterName == null) {
 129             if (other.fFilterName != null) {
 130                 return false;
 131             }
 132         } else if (!fFilterName.equals(other.fFilterName)) {
 133             return false;
 134         }
 135         return true;
 136     }
 137 }