001: /*
002: * <copyright>
003: *
004: * Copyright 2002-2004 BBNT Solutions, LLC
005: * under sponsorship of the Defense Advanced Research Projects
006: * Agency (DARPA).
007: *
008: * You can redistribute this software and/or modify it under the
009: * terms of the Cougaar Open Source License as published on the
010: * Cougaar Open Source Website (www.cougaar.org).
011: *
012: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
013: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
014: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
015: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
016: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
017: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
018: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
019: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
020: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
021: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
022: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
023: *
024: * </copyright>
025: */
026:
027: package org.cougaar.logistics.servlet;
028:
029: import java.util.Collection;
030: import java.util.Iterator;
031: import java.util.List;
032: import java.util.Vector;
033:
034: import javax.servlet.Servlet;
035:
036: import org.cougaar.core.mts.MessageAddress;
037:
038: import org.cougaar.planning.ldm.PlanningFactory;
039: import org.cougaar.planning.service.LDMService;
040:
041: import org.cougaar.core.service.AlarmService;
042: import org.cougaar.core.service.BlackboardQueryService;
043: import org.cougaar.core.service.BlackboardService;
044: import org.cougaar.core.service.ConditionService;
045: import org.cougaar.core.service.DomainService;
046: import org.cougaar.core.service.SchedulerService;
047: import org.cougaar.core.service.wp.WhitePagesService;
048:
049: import org.cougaar.planning.servlet.BlackboardServletComponent;
050: import org.cougaar.core.servlet.SimpleServletSupport;
051:
052: import org.cougaar.lib.xml.parser.ParamParser;
053: import org.cougaar.lib.param.Param;
054:
055: import org.cougaar.util.ConfigFinder;
056:
057: public class ConditionComponent extends BlackboardServletComponent {
058:
059: public static final String COMPONENT_PARAMETER = "conditionName";
060:
061: public final void setConditionService(ConditionService s) {
062: conditionService = s;
063: }
064:
065: /**
066: * Get the condition service
067: */
068: protected ConditionService getConditionService() {
069: return conditionService;
070: }
071:
072: private Collection parameters;
073:
074: /**
075: * Called just after construction (via introspection) by the
076: * loader if a non-null parameter Object was specified by
077: * the ComponentDescription.
078: * <p>
079: * Save our Servlet's configurable path, for example
080: * "/test".
081: * <p>
082: * This is only set during initialization and is constant
083: * for the lifetime of the Servlet.
084: *
085: * @param o list of parameters to plugin
086: */
087: public void setParameter(Object o) {
088: // expecting a List of [String, String]
089: if (!(o instanceof List)) {
090: throw new IllegalArgumentException(
091: "Expecting a List parameter, not : "
092: + ((o != null) ? o.getClass().getName()
093: : "null"));
094: }
095: List l = (List) o;
096: if (l.size() < 2) {
097: throw new IllegalArgumentException(
098: "Expecting a List with at least two elements,"
099: + " \"classname\" and \"path\", not "
100: + l.size());
101: }
102: Object o1 = l.get(0);
103: Object o2 = l.get(1);
104: if ((!(o1 instanceof String)) || (!(o2 instanceof String))) {
105: throw new IllegalArgumentException(
106: "Expecting two Strings, not (" + o1 + ", " + o2
107: + ")");
108: }
109:
110: // save the servlet classname and path
111: this .classname = (String) o1;
112: this .path = (String) o2;
113:
114: if (o != null) {
115: parameters = (Collection) o;
116: } else {
117: parameters = new Vector(0);
118: }
119: }
120:
121: /**
122: * Get any component parameters passed by the component instantiator.
123: */
124: public Collection getParameters() {
125: return parameters;
126: }
127:
128: /**
129: * so a subclass can create a different servlet support just by overriding this method
130: * perhaps the core should work like this?
131: */
132: protected SimpleServletSupport makeServletSupport() {
133: setConditionName(getParameters());
134:
135: // create a new support instance
136: return new ConditionSupport(path, agentId, blackboardQuery,
137: log, getBlackboardService(), getConfigFinder(),
138: ((PlanningFactory) getDomainService().getFactory(
139: "planning")), getLDMService().getLDM(),
140: getSchedulerService(), wp, conditionName);
141: }
142:
143: public final void setWhitePagesService(WhitePagesService wp) {
144: this .wp = wp;
145: }
146:
147: public final void setDomainService(DomainService s) {
148: domainService = s;
149: }
150:
151: protected final DomainService getDomainService() {
152: return domainService;
153: }
154:
155: /**
156: * Expecting conditionName=ferris as parameter to component. <br>
157: * If none, defaults to DoubleCondition. <p>
158: *
159: * Potentially there could be a list of conditions, but then the gui would have to deal with it, etc...
160: **/
161: protected void setConditionName(Collection envParams) {
162: if (log.isDebugEnabled()) {
163: log.debug("Creating param table for agent " + agentId);
164: }
165:
166: for (Iterator i = envParams.iterator(); i.hasNext();) {
167: String runtimeParam = (String) i.next();
168: Param p = paramParser.getParam(runtimeParam);
169: if (p != null) {
170: String name = p.getName();
171: if (log.isDebugEnabled())
172: log
173: .debug(agentId
174: + " - ConditionComponent.createParamTable() - got param name "
175: + name + " with value " + p);
176: if (name.equals(COMPONENT_PARAMETER)) {
177: try {
178: conditionName = p.getStringValue();
179: } catch (Exception e) {
180: log
181: .error("Got Exception when reading value of parameter "
182: + name);
183: }
184: }
185: }
186: }
187: }
188:
189: protected WhitePagesService wp = null;
190: protected DomainService domainService = null;
191: protected ConditionService conditionService;
192: protected ParamParser paramParser = new ParamParser();
193: protected String conditionName = "DoubleCondition";
194: }
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