protected String getFragment(DataRepository data, String rollupID) {
// check in the cache to see if there is a cached value for
// this ID. if so, return it.
String cachedResult = CACHE.get(rollupID);
if (cachedResult != null) return cachedResult;
// lookup the data element [/ROLLUP_ID/Rollup Instance
// List]. If it is missing or if it contains less than two
// items, return an empty fragment (and save the empty
// fragment to the cache).
String instanceListName = rollupInstanceList(rollupID);
ListData instanceList = getList(data, instanceListName);
if (instanceList == null || instanceList.size() < 2) return CACHE.put(rollupID, "");
// Construct an HTML fragment
String prompt = resources.format("Rollup_Select_Prompt_FMT", rollupID);
StringBuffer result = new StringBuffer();
result
.append("<tr><td>")
.append(HTMLUtils.escapeEntities(prompt))
.append(" </td>\n <td colspan=10><select name='[")
.append(rollupPrefix(rollupID))
.append("]s'>");
for (int i = 0; i < instanceList.size(); i++) {
String opt = HTMLUtils.escapeEntities((String) instanceList.get(i));
result.append("\n<option value=\"").append(opt).append("\">").append(opt);
}
result.append("\n</select></td></tr>\n");
return CACHE.put(rollupID, result.toString());
}
protected void writeContents() throws IOException {
DataRepository data = getDataRepository();
if (data == null) return;
init(data);
// get the [Use_Rollup] data element for the current
// project. If it is null, return immediately.
String prefix = getPrefix();
if (prefix == null) return;
String useRollupName = DataRepository.createDataName(prefix, "Use_Rollup");
ListData rollupIDs = getList(data, useRollupName);
if (rollupIDs == null) return;
String tableStart = TABLE_START, tableEnd = "", tableRow;
for (int i = 0; i < rollupIDs.size(); i++) {
tableRow = getFragment(data, rollupIDs.get(i).toString());
if (tableRow != null && tableRow.length() > 0) {
out.print(tableStart);
out.print(tableRow);
tableStart = "";
tableEnd = TABLE_END;
}
}
out.print(tableEnd);
}