/**
* Given a Selector object and the request parameters it evaluates the Filter Expression in case
* that it is defined and returns the result.
*
* @param sel The Selector that it is being used.
* @param parameters parameters used for this request.
* @return a String with the evaluated JavaScript filter expression in case it is defined.
*/
private String getDefaultFilterExpression(Selector sel, Map<String, String> parameters) {
if ((sel.getFilterExpression() == null || sel.getFilterExpression().equals(""))) {
// Nothing to filter
return "";
}
Object result = null;
try {
result =
ParameterUtils.getJSExpressionResult(
parameters, RequestContext.get().getSession(), sel.getFilterExpression());
} catch (Exception e) {
log.error("Error evaluating filter expression: " + e.getMessage(), e);
}
if (result != null && !result.toString().equals("")) {
return NEW_FILTER_CLAUSE + "(" + result.toString() + ")";
}
return "";
}
/**
* Returns the selectors HQL query. In case that it contains the '@additional_filters@' String it
* is replaced by a set of filter clauses.
*
* <p>These include a filter clause:
*
* <ul>
* <li>for the main entity's client by the context's client.
* <li>for the main entity's organization by an organization list see {@link #getOrgs(String)}
* <li>with Selector's default filter expression.
* <li>for each default expression defined on the selector fields.
* <li>for each selector field in case exists a value for it on the parameters param.
* </ul>
*
* @param parameters Map of String values with the request parameters.
* @param sel the selector that it is being retrieved the data.
* @param xmlDateFormat SimpleDataFormat to be used to parse date Strings.
* @return a String with the HQL to be executed.
*/
private String parseOptionalFilters(
Map<String, String> parameters, Selector sel, SimpleDateFormat xmlDateFormat) {
String HQL = sel.getHQL();
if (!HQL.contains(ADDITIONAL_FILTERS)) {
return HQL;
}
final String requestType = parameters.get(SelectorConstants.DS_REQUEST_TYPE_PARAMETER);
StringBuffer additionalFilter = new StringBuffer();
final String entityAlias = sel.getEntityAlias();
// Client filter
additionalFilter
.append(entityAlias + ".client.id in ('0', '")
.append(OBContext.getOBContext().getCurrentClient().getId())
.append("')");
// Organization filter
final String orgs = DataSourceUtils.getOrgs(parameters.get(JsonConstants.ORG_PARAMETER));
if (StringUtils.isNotEmpty(orgs)) {
additionalFilter.append(NEW_FILTER_CLAUSE);
additionalFilter.append(
entityAlias
+ (sel.getTable().getName().equals("Organization")
? ".id in (" + orgs + ")"
: ".organization in (" + orgs + ")"));
}
additionalFilter.append(getDefaultFilterExpression(sel, parameters));
StringBuffer defaultExpressionsFilter = new StringBuffer();
boolean hasFilter = false;
List<SelectorField> fields =
OBDao.getActiveOBObjectList(sel, Selector.PROPERTY_OBUISELSELECTORFIELDLIST);
HashMap<String, String[]> criteria = getCriteria(parameters);
for (SelectorField field : fields) {
if (StringUtils.isEmpty(field.getClauseLeftPart())) {
continue;
}
String operator = null;
String value = null;
String[] operatorvalue = null;
if (criteria != null) {
operatorvalue = criteria.get(field.getDisplayColumnAlias());
if (operatorvalue != null) {
operator = operatorvalue[0];
value = operatorvalue[1];
}
}
if (StringUtils.isEmpty(value)) {
value = parameters.get(field.getDisplayColumnAlias());
}
// Add field default expression on picklist if it is not already filtered. Default expressions
// on selector popup are already evaluated and their values came in the parameters object.
if (field.getDefaultExpression() != null
&& !"Window".equals(requestType)
&& StringUtils.isEmpty(value)) {
try {
String defaultValue = "";
Object defaultValueObject =
ParameterUtils.getJSExpressionResult(
parameters, RequestContext.get().getSession(), field.getDefaultExpression());
if (defaultValueObject != null) {
defaultValue = defaultValueObject.toString();
}
if (StringUtils.isNotEmpty(defaultValue)) {
defaultExpressionsFilter.append(NEW_FILTER_CLAUSE);
defaultExpressionsFilter.append(
getWhereClause(operator, defaultValue, field, xmlDateFormat, operatorvalue));
}
} catch (Exception e) {
log.error("Error evaluating filter expression: " + e.getMessage(), e);
}
}
if (field.isFilterable() && StringUtils.isNotEmpty(value)) {
String whereClause = getWhereClause(operator, value, field, xmlDateFormat, operatorvalue);
if (!hasFilter) {
additionalFilter.append(NEW_FILTER_CLAUSE);
additionalFilter.append(" (");
hasFilter = true;
} else {
if ("Window".equals(requestType)) {
additionalFilter.append(NEW_FILTER_CLAUSE);
} else {
additionalFilter.append(NEW_OR_FILTER_CLAUSE);
}
}
additionalFilter.append(whereClause);
}
}
if (hasFilter) {
additionalFilter.append(")");
}
if (defaultExpressionsFilter.length() > 0) {
additionalFilter.append(defaultExpressionsFilter);
}
HQL = HQL.replace(ADDITIONAL_FILTERS, additionalFilter.toString());
return HQL;
}
