How to use

disable

method

in

org.apache.hadoop.hbase.constraint.Constraints

/**
 * Remove all {@link Constraint Constraints} that have been added to the table
 * and turn off the constraint processing.
 * <p>
 * All {@link Configuration Configurations} and their associated
 * {@link Constraint} are removed.
 * 
 * @param desc
 *          {@link HTableDescriptor} to remove {@link Constraint Constraints}
 *          from.
 */
public static void remove(HTableDescriptor desc) {
 // disable constraints
 disable(desc);
 // remove all the constraint settings
 List<Bytes> keys = new ArrayList<>();
 // loop through all the key, values looking for constraints
 for (Map.Entry<Bytes, Bytes> e : desc
   .getValues().entrySet()) {
  String key = Bytes.toString((e.getKey().get()));
  String[] className = CONSTRAINT_HTD_ATTR_KEY_PATTERN.split(key);
  if (className.length == 2) {
   keys.add(e.getKey());
  }
 }
 // now remove all the keys we found
 for (Bytes key : keys) {
  desc.remove(key);
 }
}

Constraints.disable(desc);

/**
 * Test that Constraints are properly enabled, disabled, and removed
 *
 * @throws Exception
 */
@SuppressWarnings("unchecked")
@Test
public void testEnableDisableRemove() throws Exception {
 HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(name.getMethodName()));
 // check general enabling/disabling of constraints
 // first add a constraint
 Constraints.add(desc, AllPassConstraint.class);
 // make sure everything is enabled
 assertTrue(Constraints.enabled(desc, AllPassConstraint.class));
 assertTrue(desc.hasCoprocessor(ConstraintProcessor.class.getName()));
 // check disabling
 Constraints.disable(desc);
 assertFalse(desc.hasCoprocessor(ConstraintProcessor.class.getName()));
 // make sure the added constraints are still present
 assertTrue(Constraints.enabled(desc, AllPassConstraint.class));
 // check just removing the single constraint
 Constraints.remove(desc, AllPassConstraint.class);
 assertFalse(Constraints.has(desc, AllPassConstraint.class));
 // Add back the single constraint
 Constraints.add(desc, AllPassConstraint.class);
 // and now check that when we remove constraints, all are gone
 Constraints.remove(desc);
 assertFalse(desc.hasCoprocessor(ConstraintProcessor.class.getName()));
 assertFalse(Constraints.has(desc, AllPassConstraint.class));
}

/**
 * Remove all {@link Constraint Constraints} that have been added to the table
 * and turn off the constraint processing.
 * <p>
 * All {@link Configuration Configurations} and their associated
 * {@link Constraint} are removed.
 * 
 * @param desc
 *          {@link HTableDescriptor} to remove {@link Constraint Constraints}
 *          from.
 */
public static void remove(HTableDescriptor desc) {
 // disable constraints
 disable(desc);
 // remove all the constraint settings
 List<ImmutableBytesWritable> keys = new ArrayList<ImmutableBytesWritable>();
 // loop through all the key, values looking for constraints
 for (Map.Entry<ImmutableBytesWritable, ImmutableBytesWritable> e : desc
   .getValues().entrySet()) {
  String key = Bytes.toString((e.getKey().get()));
  String[] className = CONSTRAINT_HTD_ATTR_KEY_PATTERN.split(key);
  if (className.length == 2) {
   keys.add(e.getKey());
  }
 }
 // now remove all the keys we found
 for (ImmutableBytesWritable key : keys) {
  desc.remove(key);
 }
}

/**
 * Remove all {@link Constraint Constraints} that have been added to the table
 * and turn off the constraint processing.
 * <p>
 * All {@link Configuration Configurations} and their associated
 * {@link Constraint} are removed.
 * 
 * @param desc
 *          {@link HTableDescriptor} to remove {@link Constraint Constraints}
 *          from.
 */
public static void remove(HTableDescriptor desc) {
 // disable constraints
 disable(desc);
 // remove all the constraint settings
 List<ImmutableBytesWritable> keys = new ArrayList<ImmutableBytesWritable>();
 // loop through all the key, values looking for constraints
 for (Map.Entry<ImmutableBytesWritable, ImmutableBytesWritable> e : desc
   .getValues().entrySet()) {
  String key = Bytes.toString((e.getKey().get()));
  String[] className = CONSTRAINT_HTD_ATTR_KEY_PATTERN.split(key);
  if (className.length == 2) {
   keys.add(e.getKey());
  }
 }
 // now remove all the keys we found
 for (ImmutableBytesWritable key : keys) {
  desc.remove(key.get());
 }
}

Constraints.disable(desc);

/**
 * Test that Constraints are properly enabled, disabled, and removed
 *
 * @throws Exception
 */
@SuppressWarnings("unchecked")
@Test
public void testEnableDisableRemove() throws Exception {
 HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(name.getMethodName()));
 // check general enabling/disabling of constraints
 // first add a constraint
 Constraints.add(desc, AllPassConstraint.class);
 // make sure everything is enabled
 assertTrue(Constraints.enabled(desc, AllPassConstraint.class));
 assertTrue(desc.hasCoprocessor(ConstraintProcessor.class.getName()));
 // check disabling
 Constraints.disable(desc);
 assertFalse(desc.hasCoprocessor(ConstraintProcessor.class.getName()));
 // make sure the added constraints are still present
 assertTrue(Constraints.enabled(desc, AllPassConstraint.class));
 // check just removing the single constraint
 Constraints.remove(desc, AllPassConstraint.class);
 assertFalse(Constraints.has(desc, AllPassConstraint.class));
 // Add back the single constraint
 Constraints.add(desc, AllPassConstraint.class);
 // and now check that when we remove constraints, all are gone
 Constraints.remove(desc);
 assertFalse(desc.hasCoprocessor(ConstraintProcessor.class.getName()));
 assertFalse(Constraints.has(desc, AllPassConstraint.class));
}