1 package com.indexdata.mkjsf.pazpar2.commands;
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3 import org.apache.log4j.Logger;
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6 * Represents a filter parameter as it applies to the Pazpar2 search command
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8 * <p>A filter parameter consists of one or more expressions separated by commas.</p>
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10 * @author Niels Erik
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13 public class FilterParameter extends CommandParameter {
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15 private static final long serialVersionUID = -3697328835895528654L;
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16 private static Logger logger = Logger.getLogger(FilterParameter.class);
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18 public FilterParameter(String name) {
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22 public FilterParameter(Expression... expressions) {
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23 super("filter", "=", expressions);
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26 public String getValueWithExpressions () {
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27 StringBuilder completeValue = new StringBuilder("");
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28 boolean first = true;
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29 for (Expression expr : expressions) {
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31 completeValue.append(",");
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34 completeValue.append(expr.toString());
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36 return completeValue.toString();
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40 * Escapes backslash (\), comma (,) and pipe (|) from an expression string.
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42 * @param expressionString
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43 * @return escaped expressionString
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45 private String pz2escape (String expressionString) {
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46 String escaped = expressionString.replaceAll("\\\\","\\\\\\\\");
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47 escaped = escaped.replaceAll(",","\\\\,");
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51 public FilterParameter copy() {
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52 logger.trace("Copying parameter '"+ name + "' for modification");
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53 FilterParameter newParam = new FilterParameter(name);
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54 newParam.value = this.value;
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55 newParam.operator = this.operator;
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56 for (Expression expr : expressions) {
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57 newParam.addExpression(expr.copy());
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