/**
* Search datasets containg param text in the metadata
*
* @param query The query object
* @param limit maximum results to return
* @param offset search begins from offset
* @throws JackanException on error
*/
public synchronized SearchResults<CkanDataset> searchDatasets(
CkanQuery query, int limit, int offset) {
StringBuilder params = new StringBuilder();
params.append("rows=").append(limit).append("&start=").append(offset);
if (query.getText().length() > 0) {
params.append("&q=");
params.append(urlEncode(query.getText()));
}
StringBuilder fq = new StringBuilder();
String fqPrefix = "";
fqPrefix = appendNamesList(fqPrefix, "groups", query.getGroupNames(), fq);
fqPrefix = appendNamesList(fqPrefix, "organization", query.getOrganizationNames(), fq);
fqPrefix = appendNamesList(fqPrefix, "tags", query.getTagNames(), fq);
fqPrefix = appendNamesList(fqPrefix, "license_id", query.getLicenseIds(), fq);
if (fq.length() > 0) {
params.append("&fq=").append(urlEncode(fq.insert(0, "(").append(")").toString()));
}
DatasetSearchResponse dsr;
dsr = getHttp(DatasetSearchResponse.class, "/api/3/action/package_search?" + params.toString());
if (dsr.success) {
for (CkanDataset ds : dsr.result.getResults()) {
for (CkanResource cr : ds.getResources()) {
cr.setPackageId(ds.getId());
}
}
}
return dsr.result;
}
/**
* @param idOrName either the dataset name (i.e. laghi-monitorati-trento) or the the
* alphanumerical id (i.e. 96b8aae4e211f3e5a70cdbcbb722264256ae2e7d)
* @throws JackanException on error
*/
public synchronized CkanDataset getDataset(String idOrName) {
CkanDataset cd =
getHttp(DatasetResponse.class, "/api/3/action/package_show", "id", idOrName).result;
for (CkanResource cr : cd.getResources()) {
cr.setPackageId(cd.getId());
}
return cd;
}
/**
* Updates a resource on the ckan server.
*
* @param resource ckan resource object
* @return the updated resource
* @throws JackanException
*/
public synchronized CkanResource updateResource(CkanResource resource, Boolean checkConsistency) {
if (ckanToken == null) {
throw new JackanException(
"Tried to update resource" + resource.getName() + ", but ckan token was not set!");
}
// check consistance with original version of the to be updated resource
if (checkConsistency) {
CkanResource originalResource = getResource(resource.getId());
for (Field f : originalResource.getClass().getDeclaredFields()) {
f.setAccessible(true);
String fieldName;
try {
if ((f.get(originalResource) != null)
&& (f.get(resource) == null)
&& (!f.getName().equals("created"))) {
fieldName = f.getName();
// if(!fieldName.equals("created")){
f.set(resource, f.get(originalResource));
System.out.println("Not a null: " + fieldName + " Value: ");
// //};
// System.out.println("Not a null: "+fieldName+ " Value: ");
}
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
// System.out.println("After consistance checking resource is consist of:
// "+resource.toString());
ObjectMapper objectMapper = CkanClient.getObjectMapper();
String json = null;
try {
json = objectMapper.writeValueAsString(resource);
} catch (IOException e) {
throw new JackanException("Couldn't serialize the provided CkanResourceMinimized!", e);
}
return postHttp(
ResourceResponse.class,
"/api/3/action/resource_update",
json,
ContentType.APPLICATION_JSON)
.result;
}
/**
* Creates ckan resource on the server.
*
* @param resource ckan resource object with the minimal set of parameters required. See {@link
* CkanResource#CkanResource(java.lang.String, java.lang.String, java.lang.String,
* java.lang.String, java.lang.String, java.lang.String)}
* @return the newly created resource
* @throws JackanException
*/
public synchronized CkanResource createResource(CkanResource resource) {
logger.warning("TODO 0.4 CREATION OF FULL RESOURCE IS EXPERIMENTAL!");
if (ckanToken == null) {
throw new JackanException(
"Tried to create resource" + resource.getName() + ", but ckan token was not set!");
}
ObjectMapper objMapper = CkanClient.getObjectMapper();
String json = null;
try {
json = objMapper.writeValueAsString(resource);
} catch (IOException e) {
throw new JackanException("Couldn't serialize the provided CkanResource!", e);
}
return postHttp(
ResourceResponse.class,
"/api/3/action/resource_create",
json,
ContentType.APPLICATION_JSON)
.result;
}
