435 Context cctx = NamingManager.getContinuationContext(e);
436 answer = cctx.getNameParser(e.getRemainingName());
437 }
438 return answer;
439 }
440
441 public String composeName(String name, String prefix)
442 throws NamingException {
443 Name fullName = composeName(new CompositeName(name),
444 new CompositeName(prefix));
445 return fullName.toString();
446 }
447
448 /**
449 * This default implementation simply concatenates the two names.
450 * There's one twist when the "java.naming.provider.compose.elideEmpty"
451 * environment setting is set to "true": if each name contains a
452 * nonempty component, and if 'prefix' ends with an empty component or
453 * 'name' starts with one, then one empty component is dropped.
454 * For example:
455 * <pre>
456 * elideEmpty=false elideEmpty=true
457 * {"a"} + {"b"} => {"a", "b"} {"a", "b"}
458 * {"a"} + {""} => {"a", ""} {"a", ""}
459 * {"a"} + {"", "b"} => {"a", "", "b"} {"a", "b"}
460 * {"a", ""} + {"b", ""} => {"a", "", "b", ""} {"a", "b", ""}
461 * {"a", ""} + {"", "b"} => {"a", "", "", "b"} {"a", "", "b"}
462 * </pre>
463 */
464 public Name composeName(Name name, Name prefix) throws NamingException {
465 Name res = (Name)prefix.clone();
466 if (name == null) {
467 return res;
468 }
469 res.addAll(name);
470
471 String elide = (String)
472 p_getEnvironment().get("java.naming.provider.compose.elideEmpty");
473 if (elide == null || !elide.equalsIgnoreCase("true")) {
474 return res;
475 }
476
477 int len = prefix.size();
478
479 if (!allEmpty(prefix) && !allEmpty(name)) {
480 if (res.get(len - 1).equals("")) {
481 res.remove(len - 1);
482 } else if (res.get(len).equals("")) {
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435 Context cctx = NamingManager.getContinuationContext(e);
436 answer = cctx.getNameParser(e.getRemainingName());
437 }
438 return answer;
439 }
440
441 public String composeName(String name, String prefix)
442 throws NamingException {
443 Name fullName = composeName(new CompositeName(name),
444 new CompositeName(prefix));
445 return fullName.toString();
446 }
447
448 /**
449 * This default implementation simply concatenates the two names.
450 * There's one twist when the "java.naming.provider.compose.elideEmpty"
451 * environment setting is set to "true": if each name contains a
452 * nonempty component, and if 'prefix' ends with an empty component or
453 * 'name' starts with one, then one empty component is dropped.
454 * For example:
455 * <pre>{@code
456 * elideEmpty=false elideEmpty=true
457 * {"a"} + {"b"} => {"a", "b"} {"a", "b"}
458 * {"a"} + {""} => {"a", ""} {"a", ""}
459 * {"a"} + {"", "b"} => {"a", "", "b"} {"a", "b"}
460 * {"a", ""} + {"b", ""} => {"a", "", "b", ""} {"a", "b", ""}
461 * {"a", ""} + {"", "b"} => {"a", "", "", "b"} {"a", "", "b"}
462 * }</pre>
463 */
464 public Name composeName(Name name, Name prefix) throws NamingException {
465 Name res = (Name)prefix.clone();
466 if (name == null) {
467 return res;
468 }
469 res.addAll(name);
470
471 String elide = (String)
472 p_getEnvironment().get("java.naming.provider.compose.elideEmpty");
473 if (elide == null || !elide.equalsIgnoreCase("true")) {
474 return res;
475 }
476
477 int len = prefix.size();
478
479 if (!allEmpty(prefix) && !allEmpty(name)) {
480 if (res.get(len - 1).equals("")) {
481 res.remove(len - 1);
482 } else if (res.get(len).equals("")) {
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