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17 package org.apache.logging.log4j.taglib;
18
19 import java.util.ArrayList;
20 import java.util.List;
21
22 import javax.servlet.jsp.JspException;
23 import javax.servlet.jsp.tagext.DynamicAttributes;
24 import javax.servlet.jsp.tagext.Tag;
25
26 import org.apache.logging.log4j.Level;
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33 public class EntryTag extends LoggerAwareTagSupport implements DynamicAttributes {
34 private static final long serialVersionUID = 1L;
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36 private static final String FQCN = EntryTag.class.getName();
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38 private List<Object> attributes;
39
40 @Override
41 protected void init() {
42 super.init();
43 if (this.attributes == null) {
44 this.attributes = new ArrayList<Object>();
45 } else {
46 this.attributes.clear();
47 }
48 }
49
50 @Override
51 public void setDynamicAttribute(final String uri, final String name, final Object value) {
52 this.attributes.add(value);
53 }
54
55 @Override
56 public int doEndTag() throws JspException {
57 final Log4jTaglibLogger logger = this.getLogger();
58
59 if (TagUtils.isEnabled(logger, Level.TRACE, null)) {
60 if (this.attributes.size() == 0) {
61 logger.entry(FQCN);
62 } else {
63 logger.entry(FQCN, this.attributes.toArray());
64 }
65 }
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67 return Tag.EVAL_PAGE;
68 }
69 }