Mercurial > hg > digilib-old

annotate servlet/src/digilib/servlet/PDFJobInformation.java @ 505:06d7e8c09b11 digilibPDF

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author cmielack
date Fri, 06 Mar 2009 11:08:26 +0100
parents fdb824bd57ab
children ab94692bff0c
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1 package digilib.servlet;
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2
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3 import java.util.ArrayList;
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4 import java.util.regex.Matcher;
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5 import java.util.regex.Pattern;
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6
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7 import javax.servlet.http.HttpServletRequest;
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8
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9 import org.apache.log4j.Logger;
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10
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11
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12 /**
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13 * A container class for storing a set of instructional parameters
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14 * used for content generating classes like MakePDF.
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15 *
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16 *
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17 * @author cmielack
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18 *
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19 */
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20
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21
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22
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23 public class PDFJobInformation extends ParameterMap {
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24
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25 String[] parameter_list = {"pgs"};//{"fn","pgs","dw","dh"};
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26 /*,
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27 "wx", "wy", "ww", "wh", "ws",
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28 "mo", "rot", "cont", "brgt", "rgbm", "rbgm",
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29 "ddpi", "ddpix", "ddpiy", "scale"};*/
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30
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31
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32 ImageJobInformation image_info = null;
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33 DigilibConfiguration dlConfig = null;
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34 /** gengeral logger for this class */
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35 protected static Logger logger = Logger.getLogger("digilib.servlet");
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36
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37
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38 public PDFJobInformation(DigilibConfiguration dlcfg) {
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39 super(30);
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40
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41 // url of the page/document (second part)
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42 // newParameter("fn", "", null, 's');
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43 // page number
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44 newParameter("pgs", "", null, 's');
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45 // width of client in pixels
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46 // newParameter("dw", new Integer(0), null, 's');
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47 // height of client in pixels
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48 // newParameter("dh", new Integer(0), null, 's');
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49 // left edge of image (float from 0 to 1)
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50 /* newParameter("wx", new Float(0), null, 's');
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51 // top edge in image (float from 0 to 1)
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52 newParameter("wy", new Float(0), null, 's');
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53 // width of image (float from 0 to 1)
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54 newParameter("ww", new Float(1), null, 's');
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55 // height of image (float from 0 to 1)
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56 newParameter("wh", new Float(1), null, 's');
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57 // scale factor
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58 newParameter("ws", new Float(1), null, 's');
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59 // special options like 'fit' for gifs
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60 newParameter("mo", "", null, 's');
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61 // rotation angle (degree)
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62 newParameter("rot", new Float(0), null, 's');
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63 // contrast enhancement factor
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64 newParameter("cont", new Float(0), null, 's');
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65 // brightness enhancement factor
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66 newParameter("brgt", new Float(0), null, 's');
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67 // color multiplicative factors
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68 newParameter("rgbm", "0/0/0", null, 's');
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69 // color additive factors
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70 newParameter("rgba", "0/0/0", null, 's');
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71 // display dpi resolution (total)
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72 newParameter("ddpi", new Float(0), null, 's');
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73 // display dpi X resolution
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74 newParameter("ddpix", new Float(0), null, 's');
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75 // display dpi Y resolution
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76 newParameter("ddpiy", new Float(0), null, 's');
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77 // scale factor for mo=ascale
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78 newParameter("scale", new Float(1), null, 's');
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79 */
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80 /*
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81 * Parameters of type 'i' are not exchanged between client and server,
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82 * but are for the servlets or JSPs internal use.
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83 */
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84
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85 /* // url of the page/document (first part, may be empty)
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86 newParameter("request.path", "", null, 'i');
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87 // base URL (from http:// to below /servlet)
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88 newParameter("base.url", null, null, 'i');
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89 // DocuImage instance for this request
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90 */
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91 /*
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92 * Parameters of type 'c' are for the clients use
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93 */
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94
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95 /* // "real" filename
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96 newParameter("img.fn", "", null, 'c');
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97 // image dpi x
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98 newParameter("img.dpix", new Integer(0), null, 'c');
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99 // image dpi y
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100 newParameter("img.dpiy", new Integer(0), null, 'c');
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101 // hires image size x
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102 newParameter("img.pix_x", new Integer(0), null, 'c');
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103 // hires image size y
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104 newParameter("img.pix_y", new Integer(0), null, 'c');
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105 // total number of pages
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106 newParameter("pt", new Integer(0), null, 'c');
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107 // display level of digilib (0 = just image, 1 = one HTML page
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108 // 2 = in frameset, 3 = XUL-'frameset'
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109 // 4 = XUL-Sidebar )
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110 newParameter("lv", new Integer(2), null, 'c');
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111 // marks
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112 newParameter("mk", "", null, 'c');
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113 */
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114 dlConfig = dlcfg;
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115
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116 }
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117
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118 public void setWithRequest(HttpServletRequest request) {
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119 image_info = new ImageJobInformation(dlConfig);
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120 image_info.setWithRequest(request);
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121
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122 for (String param : parameter_list){
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123 if (request.getParameterMap().containsKey(param)){
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124 setValueFromString(param, request.getParameter(param));
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125 }
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126 }
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127 }
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128
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129 public String getDocumentId(){
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130 String id;
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131
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132 // TODO use complete request information for id generation
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133
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134 if(this.image_info!=null){
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135 String fn = image_info.getAsString("fn");
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136 String dh = image_info.getAsString("dh");
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137 String pgs = getAsString("pgs");
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138
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139 id = "fn=" + fn + "&dh=" + dh + "&pgs=" + pgs + ".pdf";
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140 }
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141 else {
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142 id = null;
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143 }
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144
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145 return id;
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146 }
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147
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148 public ImageJobInformation getImageJobInformation(){
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149 ImageJobInformation new_image_info = (ImageJobInformation) image_info.clone();
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150 return new_image_info;
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151 }
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152
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153 public Integer[] getPageNrs() throws Exception{
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154 ArrayList<Integer> pgs=new ArrayList<Integer>();
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155 Integer[] numarray = null;
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156
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157 String intervals[] = getAsString("pgs").split(",");
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158
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159 // convert the page-interval-strings into a list containing every single page
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160 for(String interval: intervals){
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161 if(interval.indexOf("-") > 1){
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162 String nums[] = interval.split("-");
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163
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164 // if(nums.length!=2){
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165 // throw new Exception("Malformed pageset expression: "+getAsString("pgs"));
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166 // }
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167
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168 for(int i=Integer.valueOf(nums[0]); i <= Integer.valueOf(nums[1]); i++){
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169 pgs.add(i);
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170 }
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171 }
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172 else if (interval.indexOf("-") < 0){
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173 pgs.add(Integer.valueOf(interval));
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174 }
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175 // else{
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176 // throw new Exception("Malformed pageset expression: "+getAsString("pgs"));
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177 // }
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178 }
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179
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180 pgs.toArray(numarray);
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181 return numarray;
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182 }
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183
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184
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185 public boolean checkValidity(){
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186 String pgs = getAsString("pgs");
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187 try{
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188 String[] intervals = null;
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189 if(pgs.indexOf(",")>0){
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190 intervals = pgs.split(",");
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191 }
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192 else{
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193 intervals = new String[1];
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194 intervals[0]=pgs;
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195 }
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196 for(String interval:intervals){
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197 if(interval.indexOf("-")>=0){
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198 String[] intrvl = interval.split("-");
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199 int a = Integer.valueOf(intrvl[0]);
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200 int b = Integer.valueOf(intrvl[1]);
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201 if(a<=0 || b<a){
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202 return false;
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203 }
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204 }
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205 else {
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206 int c = Integer.valueOf(interval);
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207 if(c<=0)
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208 return false;
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209
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210 }
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211 }
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212 }
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213 catch(Exception e){
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214 logger.error("invalid pgs-input");
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215 return false;
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216 }
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217 return true;
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218 }
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219
503
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220 }