Java Code Examples for java.util.concurrent.ConcurrentHashMap#replace()
The following examples show how to use
java.util.concurrent.ConcurrentHashMap#replace() .
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Example 1
Source File: MetaFileUtilTest.java From vxquery with Apache License 2.0 | 6 votes |
/** * Test the update metadata file process. */ @Test public void step5_testUpdateMetadata() throws IOException, ClassNotFoundException, NoSuchAlgorithmException, JAXBException { ConcurrentHashMap<String, XmlMetadata> fromFileMap = metaFileUtil.getMetadata(); XmlMetadata modified = fromFileMap.get(TestConstants.XML_FILE); File xml = new File(TestConstants.XML_FILE); modified.setMd5(metaFileUtil.generateMD5(xml)); fromFileMap.replace(TestConstants.XML_FILE, modified); metaFileUtil.updateMetadataMap(fromFileMap, TestConstants.INDEX_DIR); Assert.assertNotNull(metaFileUtil.getMetadata()); }
Example 2
Source File: ExpectedMBeanInfo.java From openjdk-systemtest with Apache License 2.0 | 5 votes |
/** * Load up the static data into our tracking structure. * * @param <code>category</code> Category of item to load. */ private static void initChecklist(String category) { ConcurrentHashMap<String, Integer> checklist = information.get(category).checklist; String[] itemList = information.get(category).items; Integer tempInt; for (String item : itemList) { tempInt = checklist.putIfAbsent(item, 1); if (tempInt != null) { // JFDI checklist.replace(item, tempInt + 1); } } }
Example 3
Source File: ExpectedMBeanInfo.java From openjdk-systemtest with Apache License 2.0 | 5 votes |
/** * Utility method to check off items from checklist. * * @param name Name of checklist. * @param item Name of item to decrement. * @return The new count value of the check list item. */ public static Integer checkOffChecklistItem(String name, String item) { if (information == null) { initExpectedMBean(); } ConcurrentHashMap<String, Integer> checklist = information.get(name).checklist; Integer currentValue = checklist.get(item); Integer nextValue = 1; if (currentValue == null) { item = UNEXPECTED_PREFIX + item; currentValue = checklist.putIfAbsent(item, 1); if (currentValue != null) { nextValue = currentValue + 1; } } else { nextValue = currentValue - 1; } if (currentValue != null) { if (!checklist.replace(item, currentValue, nextValue)) { Report.printlnErr("Cannot successfully check off item " + item + " from " + name + " checklist! Checklist count is still " + currentValue); } } return nextValue; }
Example 4
Source File: ConcurrentHashMapTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
/** * replace(null, x) throws NPE */ public void testReplace_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace(null, "whatever"); shouldThrow(); } catch (NullPointerException success) {} }
Example 5
Source File: ConcurrentHashMapTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
/** * replace(null, x, y) throws NPE */ public void testReplaceValue_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace(null, one, "whatever"); shouldThrow(); } catch (NullPointerException success) {} }
Example 6
Source File: ConcurrentHashMapTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
/** * replace(x, null) throws NPE */ public void testReplace2_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace("whatever", null); shouldThrow(); } catch (NullPointerException success) {} }
Example 7
Source File: ConcurrentHashMapTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
/** * replace(x, null, y) throws NPE */ public void testReplaceValue2_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace("whatever", null, "A"); shouldThrow(); } catch (NullPointerException success) {} }
Example 8
Source File: ConcurrentHashMapTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
/** * replace(x, y, null) throws NPE */ public void testReplaceValue3_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace("whatever", one, null); shouldThrow(); } catch (NullPointerException success) {} }
Example 9
Source File: ConcurrentHashMapTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * replace(null, x) throws NPE */ public void testReplace_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace(null, "whatever"); shouldThrow(); } catch (NullPointerException success) {} }
Example 10
Source File: ConcurrentHashMapTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * replace(null, x, y) throws NPE */ public void testReplaceValue_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace(null, one, "whatever"); shouldThrow(); } catch (NullPointerException success) {} }
Example 11
Source File: ConcurrentHashMapTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * replace(x, null) throws NPE */ public void testReplace2_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace("whatever", null); shouldThrow(); } catch (NullPointerException success) {} }
Example 12
Source File: ConcurrentHashMapTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * replace(x, null, y) throws NPE */ public void testReplaceValue2_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace("whatever", null, "A"); shouldThrow(); } catch (NullPointerException success) {} }
Example 13
Source File: ConcurrentHashMapTest.java From j2objc with Apache License 2.0 | 5 votes |
/** * replace(x, y, null) throws NPE */ public void testReplaceValue3_NullPointerException() { ConcurrentHashMap c = new ConcurrentHashMap(5); try { c.replace("whatever", one, null); shouldThrow(); } catch (NullPointerException success) {} }
Example 14
Source File: TrimmedConfigurationCache.java From bazel with Apache License 2.0 | 5 votes |
/** * Finds the entry in the cache where the given key is canonical and updates or removes it. * * <p>Only one attempt is made, and if there's a collision with another change, false is returned * and the map is not changed. * * <p>This method succeeds (returns {@code true}) without doing anything if this key is currently * not canonical. * * @param transformation The transformation to apply to the given entry. The entry will be * replaced with the value returned from invoking this on the original value. If it returns * null, the entry will be removed instead. If it returns the same instance, nothing will be * done to the entry. */ private boolean updateEntryIfNoConflicts( KeyT key, UnaryOperator<KeyAndState<KeyT>> transformation) { DescriptorT descriptor = getDescriptorFor(key); ConcurrentHashMap<ConfigurationT, KeyAndState<KeyT>> trimmingsOfDescriptor = descriptors.get(descriptor); if (trimmingsOfDescriptor == null) { // There are no entries at all for this descriptor. return true; } for (Entry<ConfigurationT, KeyAndState<KeyT>> entry : trimmingsOfDescriptor.entrySet()) { KeyAndState<KeyT> currentValue = entry.getValue(); if (currentValue.getKey().equals(key)) { KeyAndState<KeyT> newValue = transformation.apply(currentValue); if (newValue == null) { return trimmingsOfDescriptor.remove(entry.getKey(), currentValue); } else if (newValue != currentValue) { return trimmingsOfDescriptor.replace(entry.getKey(), currentValue, newValue); } else { // newValue == currentValue, there's nothing to do return true; } } } // The key requested wasn't in the map, so there's nothing to do return true; }