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1
10 package org.mmbase.bridge.jsp.taglib.containers;
11
12 import java.util.*;
13 import javax.servlet.jsp.JspTagException  ;
14
15 import org.mmbase.bridge.*;
16 import org.mmbase.bridge.jsp.taglib.NodeReferrerTag;
17 import org.mmbase.bridge.jsp.taglib.util.Attribute;
18 import org.mmbase.bridge.util.Queries;
19 import org.mmbase.cache.CachePolicy;
20 import org.mmbase.storage.search.*;
21
22 import org.mmbase.util.logging.Logger;
23 import org.mmbase.util.logging.Logging;
24
25
26
32 public class ListRelationsContainerTag extends NodeReferrerTag implements NodeQueryContainer {
33
34 private static final Logger log = Logging.getLoggerInstance(ListRelationsContainerTag.class);
35 private NodeQuery query = null;
36 private NodeQuery relatedQuery = null;
37 private Attribute cachePolicy = Attribute.NULL;
38 private Attribute type = Attribute.NULL;
39 private Attribute role = Attribute.NULL;
40 private Attribute searchDir = Attribute.NULL;
41
42 public void setCachepolicy(String t) throws JspTagException {
43 cachePolicy = getAttribute(t);
44 }
45
46
49 public void setType(String t) throws JspTagException {
50 type = getAttribute(t);
51 }
52
55 public void setRole(String r) throws JspTagException {
56 role = getAttribute(r);
57 }
58
59 public void setSearchdir(String s) throws JspTagException {
60 searchDir = getAttribute(s);
61 }
62
63
64 public Query getQuery() {
65 return getNodeQuery();
66 }
67 public NodeQuery getNodeQuery() {
68 if (query.isUsed()) query = (NodeQuery) query.clone();
69 return query;
70 }
71
72 public Node getRelatedFromNode() throws JspTagException {
73 return getNode();
74 }
75
76 public NodeQuery getRelatedQuery() {
77 NodeQuery r = (NodeQuery) relatedQuery.clone();
78 List querySteps = query.getSteps();
80 List rSteps = r.getSteps();
81 for (int i = 0 ; i < querySteps.size(); i++) {
82 Step queryStep = (Step) querySteps.get(i);
83 Step rStep = (Step) rSteps.get(i);
84 Queries.copyConstraint(query.getConstraint(), queryStep, r, rStep);
85 Queries.copySortOrders(query.getSortOrders(), queryStep, r, rStep);
86 }
87
88 return r;
89 }
90
91
92 public int doStartTag() throws JspTagException {
93 Cloud cloud = getCloudVar();
94 NodeManager nm = null;
95 if (type != Attribute.NULL) {
96 nm = getCloudVar().getNodeManager(type.getString(this));
97 }
98 Node relatedFromNode = getNode();
99 query = Queries.createRelationNodesQuery(relatedFromNode, nm, (String ) role.getValue(this), (String ) searchDir.getValue(this));
100 relatedQuery = Queries.createRelatedNodesQuery(relatedFromNode, nm, (String ) role.getValue(this), (String ) searchDir.getValue(this));
101
102 if (cachePolicy != Attribute.NULL) {
103 query.setCachePolicy(CachePolicy.getPolicy(cachePolicy.getValue(this)));
104 relatedQuery.setCachePolicy(CachePolicy.getPolicy(cachePolicy.getValue(this)));
105 }
106 return EVAL_BODY;
107 }
108
109 public int doAfterBody() throws JspTagException {
110 if(EVAL_BODY == EVAL_BODY_BUFFERED) {
111 try {
112 if (bodyContent != null) {
113 bodyContent.writeOut(bodyContent.getEnclosingWriter());
114 }
115 } catch (java.io.IOException ioe){
116 throw new JspTagException (ioe.toString());
117 }
118 }
119 return SKIP_BODY;
120 }
121 public int doEndTag() throws JspTagException {
122 query = null;
123 relatedQuery = null;
124 return super.doEndTag();
125 }
126
127 public Object getCurrent() {
128 return null;
129 }
130
131 }
132 |
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