[9] | 1 | package jp.ac.osaka_u.sanken.sparql;
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| 2 |
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| 3 | import java.io.File;
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| 4 | import java.io.FileOutputStream;
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| 5 | import java.io.IOException;
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| 6 | import java.io.OutputStream;
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| 7 | import java.io.OutputStreamWriter;
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| 8 | import java.io.PrintWriter;
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| 9 | import java.util.List;
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| 10 | import java.util.Map;
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| 11 |
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| 12 | import com.hp.hpl.jena.rdf.model.RDFNode;
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| 13 |
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| 14 | /**
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| 15 | * 繧サ繝代Ξ繝シ繧ソ縺ォ繧医▲縺ヲ蛹コ蛻�i繧後◆蠖「縺ァ繝��繧ソ繧偵お繧ッ繧ケ繝昴�繝医☆繧九◆繧√�繧ッ繝ゥ繧ケ
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| 16 | * @author kato
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| 17 | *
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| 18 | */
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| 19 | public class SeparatedValuesExporter {
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| 20 |
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| 21 | private String separator;
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| 22 | private List<Map<String, RDFNode>> data;
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| 23 |
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| 24 | public SeparatedValuesExporter(String separator, List<Map<String, RDFNode>> data){
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| 25 | this.separator = separator;
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| 26 | this.data = data;
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| 27 | }
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| 28 |
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| 29 | public boolean export(File file) throws IOException{
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| 30 | return export(new FileOutputStream(file));
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| 31 | }
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| 32 |
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| 33 | public boolean export(OutputStream stream) throws IOException{
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| 34 |
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| 35 | PrintWriter pw = new PrintWriter(new OutputStreamWriter(stream));
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| 36 |
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| 37 | if (!outputHeader(pw, data.get(0))){
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| 38 | pw.flush();
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| 39 | pw.close();
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| 40 | return false;
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| 41 | }
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| 42 |
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| 43 | for (Map<String, RDFNode> datum : data){
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| 44 | outputContent(pw, datum);
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| 45 | }
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| 46 | pw.flush();
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| 47 | pw.close();
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| 48 |
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| 49 | return false;
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| 50 | }
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| 51 |
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| 52 | private boolean outputHeader(PrintWriter stream, Map<String, RDFNode> columns){
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| 53 | StringBuilder sb = new StringBuilder();
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| 54 |
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| 55 | int i = 0;
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| 56 | for (String key : columns.keySet()){
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| 57 | sb.append(key);
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| 58 | if (++i != columns.keySet().size()){
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| 59 | sb.append(getSeparator());
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| 60 | }
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| 61 | }
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| 62 |
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| 63 | outputLine(stream, sb.toString());
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| 64 |
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| 65 | return true;
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| 66 | }
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| 67 |
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| 68 | private boolean outputContent(PrintWriter stream, Map<String, RDFNode> row){
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| 69 | StringBuilder sb = new StringBuilder();
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| 70 |
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| 71 | int i = 0;
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| 72 | for (String key : row.keySet()){
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| 73 | sb.append(row.get(key));
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| 74 | if (++i != row.keySet().size()){
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| 75 | sb.append(getSeparator());
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| 76 | }
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| 77 | }
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| 78 |
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| 79 | outputLine(stream, sb.toString());
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| 80 |
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| 81 | return true;
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| 82 | }
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| 83 |
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| 84 | private String getSeparator(){
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| 85 | return this.separator;
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| 86 | }
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| 87 |
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| 88 | private void outputLine(PrintWriter stream, String line){
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| 89 | stream.println(line);
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| 90 | }
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| 91 |
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| 92 | }
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