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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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50 public class MetadataUuidFilter extends XMLFilterImpl {
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55 private int inMetadataElement;
56
57 private boolean skipProperty;
58
59 private boolean inSkippedNs;
60
61 private String[] validNs = new String[]{"sv", "xsi"};
62
63 private boolean removeUnwantedNamespaces;
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69
70 public MetadataUuidFilter(XMLReader parent) {
71 super(parent);
72 }
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78
79 public MetadataUuidFilter(XMLReader parent, boolean removeUnwantedNamespaces) {
80 super(parent);
81 this.removeUnwantedNamespaces = removeUnwantedNamespaces;
82 }
83
84 @Override
85 public void endPrefixMapping(String prefix) throws SAXException {
86 if (!inSkippedNs) {
87 super.endPrefixMapping(prefix);
88 }
89 inSkippedNs = false;
90
91 }
92
93
94
95
96 @Override
97 public void startPrefixMapping(String prefix, String uri) throws SAXException {
98 if (!removeUnwantedNamespaces || ArrayUtils.contains(validNs, prefix)) {
99 super.startPrefixMapping(prefix, uri);
100 }
101 else {
102 inSkippedNs = true;
103 }
104 }
105
106 @Override
107 public void endElement(String uri, String localName, String qName) throws SAXException {
108
109 if (inMetadataElement > 0) {
110 inMetadataElement--;
111 }
112
113 if (skipProperty) {
114 if ("sv:property".equals(qName)) {
115 skipProperty = false;
116 }
117 return;
118 }
119
120 super.endElement(uri, localName, qName);
121 }
122
123 @Override
124 public void characters(char[] ch, int start, int length) throws SAXException {
125 if (!skipProperty) {
126 super.characters(ch, start, length);
127 }
128 }
129
130 @Override
131 public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
132
133 if (inMetadataElement > 0) {
134 inMetadataElement++;
135 }
136
137 String svname = atts.getValue("sv:name");
138
139 if ("sv:node".equals(qName) && "MetaData".equals(svname)) {
140 inMetadataElement++;
141 }
142
143 if (inMetadataElement > 0) {
144
145 if ("sv:property".equals(qName) && ("jcr:uuid".equals(svname))) {
146 skipProperty = true;
147 }
148
149 if (skipProperty) {
150 return;
151 }
152 }
153
154 super.startElement(uri, localName, qName, atts);
155
156 }
157 }