/**
* Constructs a search URL using the information in the Parameters resource.
*
* @param params Parameters resource containing a searchExpression parameter whose value is a
* Parameters resource containing a resourceUrl parameter and other parameters that comprise
* the query expression.
* @return search url or an empty string if the url could not be formed
*/
private String buildSearchUrl(Parameters params) {
final StringBuilder searchUrl = new StringBuilder(200);
final List<ParametersParameterComponent> paramList = params.getParameter();
final ParametersParameterComponent p = ParametersUtil.findByName(paramList, SEARCH_EXPR);
if (p != null) {
final Resource r = p.getResource();
if (ResourceType.Parameters.equals(r.getResourceType())) {
final Parameters searchExprParams = (Parameters) r;
final List<ParametersParameterComponent> searchExprParamList =
searchExprParams.getParameter();
String resourceUrl = null;
final StringBuilder queryExpr = new StringBuilder(100);
// all parameters except resourceUrl contribute to the query expression
for (ParametersParameterComponent searchExprParam : searchExprParamList) {
String name = searchExprParam.getName();
try {
String value = searchExprParam.getValue().toString();
// resourceUrl is different than others
if (RESOURCE_URL.equals(name)) {
resourceUrl = value;
} else {
if (queryExpr.length() > 0) {
queryExpr.append("&");
}
queryExpr.append(name);
queryExpr.append("=");
queryExpr.append(value);
}
} catch (NullPointerException e) {
LOG.error("Null Value for search expression parameter, {}", name);
}
}
if (resourceUrl == null) {
LOG.warn("Required parameter, resourceUrl, is missing from record-match request!");
} else {
searchUrl.append(resourceUrl);
searchUrl.append("?");
searchUrl.append(queryExpr);
}
LOG.info("search Url: {}", searchUrl.toString());
}
} else {
LOG.warn("Unable to find search expression in message parameters");
}
return searchUrl.toString();
}
