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34 package info.magnolia.importexport.filters;
35
36 import org.apache.commons.lang.ArrayUtils;
37 import org.xml.sax.Attributes;
38 import org.xml.sax.SAXException;
39 import org.xml.sax.XMLReader;
40 import org.xml.sax.helpers.XMLFilterImpl;
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49
50 public class MetadataUuidFilter extends XMLFilterImpl {
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55 private int inMetadataElement;
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57 private boolean skipProperty;
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59 private boolean inSkippedNs;
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61 private String[] validNs = new String[]{"sv", "xsi"};
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63 private boolean removeUnwantedNamespaces;
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70 public MetadataUuidFilter(XMLReader parent) {
71 super(parent);
72 }
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79 public MetadataUuidFilter(XMLReader parent, boolean removeUnwantedNamespaces) {
80 super(parent);
81 this.removeUnwantedNamespaces = removeUnwantedNamespaces;
82 }
83
84
85
86
87 public void endPrefixMapping(String prefix) throws SAXException {
88 if (!inSkippedNs) {
89 super.endPrefixMapping(prefix);
90 }
91 inSkippedNs = false;
92
93 }
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95
96
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98 public void startPrefixMapping(String prefix, String uri) throws SAXException {
99 if (!removeUnwantedNamespaces || ArrayUtils.contains(validNs, prefix)) {
100 super.startPrefixMapping(prefix, uri);
101 }
102 else {
103 inSkippedNs = true;
104 }
105 }
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107
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110 public void endElement(String uri, String localName, String qName) throws SAXException {
111
112 if (inMetadataElement > 0) {
113 inMetadataElement--;
114 }
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116 if (skipProperty) {
117 if ("sv:property".equals(qName)) {
118 skipProperty = false;
119 }
120 return;
121 }
122
123 super.endElement(uri, localName, qName);
124 }
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127
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129 public void characters(char[] ch, int start, int length) throws SAXException {
130 if (!skipProperty) {
131 super.characters(ch, start, length);
132 }
133 }
134
135
136
137
138 public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
139
140 if (inMetadataElement > 0) {
141 inMetadataElement++;
142 }
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144 String svname = atts.getValue("sv:name");
145
146 if ("sv:node".equals(qName) && "MetaData".equals(svname)) {
147 inMetadataElement++;
148 }
149
150 if (inMetadataElement > 0) {
151
152 if ("sv:property".equals(qName) && ("jcr:uuid".equals(svname))) {
153 skipProperty = true;
154 }
155
156 if (skipProperty) {
157 return;
158 }
159 }
160
161 super.startElement(uri, localName, qName, atts);
162
163 }
164 }