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1
10 package org.mmbase.bridge.jsp.taglib.containers;
11
12 import javax.servlet.jsp.JspTagException  ;
13
14 import org.mmbase.bridge.*;
15 import org.mmbase.bridge.util.Queries;
16 import org.mmbase.bridge.jsp.taglib.CloudReferrerTag;
17 import org.mmbase.bridge.jsp.taglib.util.Attribute;
18 import org.mmbase.storage.search.*;
19 import org.mmbase.util.logging.*;
20
21
29 public class QueryAgeConstraintTag extends CloudReferrerTag implements QueryContainerReferrer {
30
31 private static final Logger log = Logging.getLoggerInstance(QueryAgeConstraintTag.class);
32
33 protected Attribute container = Attribute.NULL;
34
35 protected Attribute field = Attribute.NULL;
36 protected Attribute element = Attribute.NULL;
37 protected Attribute minAge = Attribute.NULL;
38 protected Attribute maxAge = Attribute.NULL;
39 protected Attribute inverse = Attribute.NULL;
40
41 public void setContainer(String c) throws JspTagException {
42 container = getAttribute(c);
43 }
44
45
48 public void setField(String f) throws JspTagException { field = getAttribute(f);
50 }
51
52 public void setElement(String e) throws JspTagException {
53 element = getAttribute(e);
54 }
55
56 public void setMinage(String a) throws JspTagException {
57 minAge = getAttribute(a);
58 }
59
60 public void setMaxage(String a) throws JspTagException {
61 maxAge = getAttribute(a);
62 }
63
64 public void setInverse(String i) throws JspTagException {
65 inverse = getAttribute(i);
66 }
67
68
69 protected int getDayMark(int age) throws JspTagException {
70 log.debug("finding day mark for " + age + " days ago");
71 Cloud cloud = getCloudVar();
72 NodeManager dayMarks = cloud.getNodeManager("daymarks");
73 NodeQuery query = dayMarks.createQuery();
74 StepField step = query.createStepField("daycount");
75 int currentDay = (int) (System.currentTimeMillis()/(1000*60*60*24));
76 Integer day = new Integer (currentDay - age);
77 if (log.isDebugEnabled()) {
78 log.debug("today : " + currentDay + " requested " + day);
79 }
80 Constraint constraint = query.createConstraint(step, FieldCompareConstraint.LESS_EQUAL, day);
81 query.setConstraint(constraint);
82 query.addSortOrder(query.createStepField("daycount"), SortOrder.ORDER_DESCENDING);
83 query.setMaxNumber(1);
84
85 NodeList result = dayMarks.getList(query);
86 if (result.size() == 0) {
87 return -1;
88 } else {
89 return result.getNode(0).getIntValue("mark");
90 }
91
92
93 }
94
95
96
97 public int doStartTag() throws JspTagException {
98
99 if (minAge == Attribute.NULL && maxAge == Attribute.NULL) {
100 throw new JspTagException ("Either 'minage' or 'maxage' (or both) attributes must be present");
101 }
102 QueryContainer c = (QueryContainer) findParentTag(QueryContainer.class, (String ) container.getValue(this));
103 Query query = c.getQuery();
104
105 String fieldName;
106 if (field == Attribute.NULL && element == Attribute.NULL) {
107 fieldName = "number";
108 } else if (field != Attribute.NULL) {
109 if(element != Attribute.NULL) {
110 throw new JspTagException ("Could not specify both 'field' and 'element' attributes on ageconstraint");
111 }
112 fieldName = field.getString(this);
113 } else {
114 fieldName = element.getString(this) + ".number";
115 }
116
117 StepField stepField = query.createStepField(fieldName);
118
119 Constraint newConstraint = null;
120
121 int minAgeInt = minAge.getInt(this, -1);
122 int maxAgeInt = maxAge.getInt(this, -1);
123
128 if (maxAgeInt != -1 && minAgeInt > 0) {
129 int maxMarker = getDayMark(maxAgeInt);
130 if (maxMarker > 0) {
131 newConstraint = query.createConstraint(stepField, new Integer (maxMarker + 1), new Integer (getDayMark(minAgeInt - 1)));
133 } else {
134 newConstraint = query.createConstraint(stepField, FieldCompareConstraint.LESS_EQUAL, new Integer (getDayMark(minAgeInt - 1)));
135 }
136 } else if (maxAgeInt != -1) { int maxMarker = getDayMark(maxAgeInt);
138 if (maxMarker > 0) {
139 newConstraint = query.createConstraint(stepField, FieldCompareConstraint.GREATER_EQUAL, new Integer (maxMarker + 1));
140 }
141 } else if (minAgeInt > 0) {
142 newConstraint = query.createConstraint(stepField, FieldCompareConstraint.LESS_EQUAL, new Integer (getDayMark(minAgeInt - 1)));
143 } else {
144 }
146
147 if (newConstraint != null) {
148 if (inverse.getBoolean(this, false)) {
149 query.setInverse(newConstraint, true);
150 }
151
152 QueryCompositeConstraintTag cons = (QueryCompositeConstraintTag) findParentTag(QueryCompositeConstraintTag.class, (String ) container.getValue(this), false);
156 if (cons!=null) {
157 cons.addChildConstraint(newConstraint);
158 } else {
159 Queries.addConstraint(query, newConstraint);
160 }
161 }
162
163 return SKIP_BODY;
164 }
165
166 }
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