Examples with Nullable javax.annotation.Nullable used on opensource projects

Example 46 with Nullable

use of javax.annotation.Nullable in project buck by facebook.

the class SignatureFactory method getSignature.

/**
   * Returns the type signature of the given element. If none is required by the VM spec, returns
   * null.
   */
@Nullable
public String getSignature(Element element) {
    SignatureWriter writer = new SignatureWriter();
    element.accept(elementVisitorAdapter, writer);
    String result = writer.toString();
    return result.isEmpty() ? null : result;
}

Example 47 with Nullable

use of javax.annotation.Nullable in project buck by facebook.

the class ProcessHelper method getProcessResourceConsumption.

/**
   * Gets resource consumption of the process with the given pid.
   */
@Nullable
public ProcessResourceConsumption getProcessResourceConsumption(long pid) {
    try {
        OperatingSystem os = OSHI.getOperatingSystem();
        OSProcess process = os.getProcess((int) pid);
        return getProcessResourceConsumptionInternal(process);
    } catch (Exception ex) {
        // do nothing
        return null;
    }
}

Example 48 with Nullable

use of javax.annotation.Nullable in project buck by facebook.

the class ProcessHelper method unixLikeProcessId.

@Nullable
private Long unixLikeProcessId(Object process) {
    Class<?> clazz = process.getClass();
    try {
        if (clazz.getName().equals("java.lang.UNIXProcess")) {
            Field field = clazz.getDeclaredField("pid");
            field.setAccessible(true);
            return (long) field.getInt(process);
        }
    } catch (Exception e) {
        LOG.warn(e, "Cannot get process id!");
    }
    return null;
}

Example 49 with Nullable

use of javax.annotation.Nullable in project buck by facebook.

the class Types method getContainerClass.

/**
   * @return The raw type of the {@link Collection} a field represents, even if contained in an
   *    {@link Optional}, but without the ParameterizedType information.
   */
@SuppressWarnings("unchecked")
@Nullable
public static Class<? extends Collection<?>> getContainerClass(Field field) {
    Type type = getFirstNonOptionalType(field);
    if (!(type instanceof ParameterizedType)) {
        return null;
    }
    Type rawType = ((ParameterizedType) type).getRawType();
    if (!(rawType instanceof Class)) {
        return null;
    }
    Class<?> clazz = (Class<?>) rawType;
    if (!(Collection.class.isAssignableFrom(clazz))) {
        return null;
    }
    return (Class<? extends Collection<?>>) clazz;
}

Example 50 with Nullable

use of javax.annotation.Nullable in project buck by facebook.

the class FakeInputBasedRuleKeyFactory method newInstance.

private RuleKeyBuilder<RuleKey> newInstance(final BuildRule buildRule) {
    SourcePathRuleFinder ruleFinder = new SourcePathRuleFinder(new BuildRuleResolver(TargetGraph.EMPTY, new DefaultTargetNodeToBuildRuleTransformer()));
    SourcePathResolver resolver = new SourcePathResolver(ruleFinder);
    return new RuleKeyBuilder<RuleKey>(ruleFinder, resolver, fileHashCache) {

        @Override
        protected RuleKeyBuilder<RuleKey> setBuildRule(BuildRule rule) {
            return this;
        }

        @Override
        protected RuleKeyBuilder<RuleKey> setReflectively(@Nullable Object val) {
            return this;
        }

        @Override
        public RuleKeyBuilder<RuleKey> setAppendableRuleKey(RuleKeyAppendable appendable) {
            return this;
        }

        @Override
        protected RuleKeyBuilder<RuleKey> setSourcePath(SourcePath sourcePath) {
            return this;
        }

        @Override
        protected RuleKeyBuilder<RuleKey> setNonHashingSourcePath(SourcePath sourcePath) {
            return setNonHashingSourcePathDirectly(sourcePath);
        }

        @Override
        public RuleKey build() {
            if (oversized.contains(buildRule.getBuildTarget())) {
                throw new SizeLimiter.SizeLimitException();
            }
            return ruleKeys.get(buildRule.getBuildTarget());
        }
    };
}