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16 package org.seasar.cubby.tags;
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18 import static org.seasar.cubby.internal.util.LogMessages.format;
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20 import java.io.IOException;
21 import java.io.StringWriter;
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23 import javax.servlet.jsp.JspException;
24 import javax.servlet.jsp.tagext.SimpleTagSupport;
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31 public class ParamTag extends SimpleTagSupport {
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34 private String name;
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37 private String value;
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45 public void setName(final String name) {
46 this.name = name;
47 }
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55 public void setValue(final String value) {
56 this.value = value;
57 }
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62 @Override
63 public void doTag() throws JspException, IOException {
64 final ParamParent parent = (ParamParent) findAncestorWithClass(this,
65 ParamParent.class);
66 if (parent == null) {
67 throw new JspException(format("ECUB1004"));
68 }
69 final String value;
70 if (this.value == null) {
71 final StringWriter writer = new StringWriter();
72 getJspBody().invoke(writer);
73 value = writer.toString().trim();
74 } else {
75 value = this.value;
76 }
77 parent.addParameter(name, value);
78 }
79
80 }