/**
* Add metadata fields. These are appended to existing values. Use <code>clearDC</code> to remove
* values. The ordering of values passed in is maintained.
*
* <p>If metadata authority control is available, try to get authority values. The authority
* confidence depends on whether authority is <em>required</em> or not.
*
* @param schema the schema for the metadata field. <em>Must</em> match the <code>name</code> of
* an existing metadata schema.
* @param element the metadata element name
* @param qualifier the metadata qualifier name, or <code>null</code> for unqualified
* @param lang the ISO639 language code, optionally followed by an underscore and the ISO3166
* country code. <code>null</code> means the value has no language (for example, a date).
* @param values the values to add.
*/
public void addMetadata(
String schema, String element, String qualifier, String lang, String[] values) {
MetadataAuthorityManager mam = MetadataAuthorityManager.getManager();
String fieldKey = MetadataAuthorityManager.makeFieldKey(schema, element, qualifier);
if (mam.isAuthorityControlled(fieldKey)) {
String authorities[] = new String[values.length];
int confidences[] = new int[values.length];
for (int i = 0; i < values.length; ++i) {
getAuthoritiesAndConfidences(fieldKey, values, authorities, confidences, i);
}
addMetadata(schema, element, qualifier, lang, values, authorities, confidences);
} else {
addMetadata(schema, element, qualifier, lang, values, null, null);
}
}
/**
* Add metadata fields. These are appended to existing values. Use <code>clearDC</code> to remove
* values. The ordering of values passed in is maintained.
*
* @param schema the schema for the metadata field. <em>Must</em> match the <code>name</code> of
* an existing metadata schema.
* @param element the metadata element name
* @param qualifier the metadata qualifier name, or <code>null</code> for unqualified
* @param lang the ISO639 language code, optionally followed by an underscore and the ISO3166
* country code. <code>null</code> means the value has no language (for example, a date).
* @param values the values to add.
* @param authorities the external authority key for this value (or null)
* @param confidences the authority confidence (default 0)
*/
public void addMetadata(
String schema,
String element,
String qualifier,
String lang,
String[] values,
String authorities[],
int confidences[]) {
List<DCValue> dublinCore = getMetadata();
MetadataAuthorityManager mam = MetadataAuthorityManager.getManager();
boolean authorityControlled = mam.isAuthorityControlled(schema, element, qualifier);
boolean authorityRequired = mam.isAuthorityRequired(schema, element, qualifier);
String fieldName = schema + "." + element + ((qualifier == null) ? "" : "." + qualifier);
// We will not verify that they are valid entries in the registry
// until update() is called.
for (int i = 0; i < values.length; i++) {
DCValue dcv = new DCValue();
dcv.schema = schema;
dcv.element = element;
dcv.qualifier = qualifier;
dcv.language = (lang == null ? null : lang.trim());
// Logic to set Authority and Confidence:
// - normalize an empty string for authority to NULL.
// - if authority key is present, use given confidence or NOVALUE if not given
// - otherwise, preserve confidence if meaningful value was given since it may document a
// failed authority lookup
// - CF_UNSET signifies no authority nor meaningful confidence.
// - it's possible to have empty authority & CF_ACCEPTED if e.g. user deletes authority key
if (authorityControlled) {
if (authorities != null && authorities[i] != null && authorities[i].length() > 0) {
dcv.authority = authorities[i];
dcv.confidence = confidences == null ? Choices.CF_NOVALUE : confidences[i];
} else {
dcv.authority = null;
dcv.confidence = confidences == null ? Choices.CF_UNSET : confidences[i];
}
// authority sanity check: if authority is required, was it supplied?
// XXX FIXME? can't throw a "real" exception here without changing all the callers to expect
// it, so use a runtime exception
if (authorityRequired && (dcv.authority == null || dcv.authority.length() == 0)) {
throw new IllegalArgumentException(
"The metadata field \""
+ fieldName
+ "\" requires an authority key but none was provided. Vaue=\""
+ dcv.value
+ "\"");
}
}
if (values[i] != null) {
// remove control unicode char
String temp = values[i].trim();
char[] dcvalue = temp.toCharArray();
for (int charPos = 0; charPos < dcvalue.length; charPos++) {
if (Character.isISOControl(dcvalue[charPos])
&& !String.valueOf(dcvalue[charPos]).equals("\u0009")
&& !String.valueOf(dcvalue[charPos]).equals("\n")
&& !String.valueOf(dcvalue[charPos]).equals("\r")) {
dcvalue[charPos] = ' ';
}
}
dcv.value = String.valueOf(dcvalue);
} else {
dcv.value = null;
}
dublinCore.add(dcv);
addDetails(fieldName);
}
if (values.length > 0) {
modifiedMetadata = true;
}
}
