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34 package info.magnolia.importexport.filters;
35
36 import org.apache.commons.lang3.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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42
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45
46
47 public class MetadataUuidFilter extends XMLFilterImpl {
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50
51
52 private int inMetadataElement;
53
54 private boolean skipProperty;
55
56 private boolean inSkippedNs;
57
58 private String[] validNs = new String[]{"sv", "xsi"};
59
60 private boolean removeUnwantedNamespaces;
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67
68 public MetadataUuidFilter(XMLReader parent, boolean removeUnwantedNamespaces) {
69 super(parent);
70 this.removeUnwantedNamespaces = removeUnwantedNamespaces;
71 }
72
73 @Override
74 public void endPrefixMapping(String prefix) throws SAXException {
75 if (!inSkippedNs) {
76 super.endPrefixMapping(prefix);
77 }
78 inSkippedNs = false;
79
80 }
81
82
83
84
85 @Override
86 public void startPrefixMapping(String prefix, String uri) throws SAXException {
87 if (!removeUnwantedNamespaces || ArrayUtils.contains(validNs, prefix)) {
88 super.startPrefixMapping(prefix, uri);
89 } else {
90 inSkippedNs = true;
91 }
92 }
93
94 @Override
95 public void endElement(String uri, String localName, String qName) throws SAXException {
96
97 if (inMetadataElement > 0) {
98 inMetadataElement--;
99 }
100
101 if (skipProperty) {
102 if ("sv:property".equals(qName)) {
103 skipProperty = false;
104 }
105 return;
106 }
107
108 super.endElement(uri, localName, qName);
109 }
110
111 @Override
112 public void characters(char[] ch, int start, int length) throws SAXException {
113 if (!skipProperty) {
114 super.characters(ch, start, length);
115 }
116 }
117
118 @Override
119 public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
120
121 if (inMetadataElement > 0) {
122 inMetadataElement++;
123 }
124
125 String svname = atts.getValue("sv:name");
126
127 if ("sv:node".equals(qName) && "MetaData".equals(svname)) {
128 inMetadataElement++;
129 }
130
131 if (inMetadataElement > 0) {
132
133 if ("sv:property".equals(qName) && ("jcr:uuid".equals(svname))) {
134 skipProperty = true;
135 }
136
137 if (skipProperty) {
138 return;
139 }
140 }
141
142 super.startElement(uri, localName, qName, atts);
143
144 }
145 }