Example usage for com.google.common.base Preconditions checkState

Introduction

In this page you can find the example usage for com.google.common.base Preconditions checkState.

Prototype

public static void checkState(boolean expression)

Source Link

Document

Ensures the truth of an expression involving the state of the calling instance, but not involving any parameters to the calling method.

Usage

From source file:com.google.dart.compiler.backend.js.ClosureJsCodingConvention.java

/**
 * {@inheritDoc}/*from   w  w  w .  jav a 2 s.  c  o m*/
 *
 * <p>Understands several different inheritance patterns that occur in
 * DartC generated code.
 */
@Override
public SubclassRelationship getClassesDefinedByCall(Node callNode) {
    Node callName = callNode.getFirstChild();
    SubclassType type = typeofClassDefiningName(callName);
    if (type != null && callNode.getChildCount() == 3) {
        // Only one type of call is expected.
        // $inherits(SubClass, SuperClass)
        Preconditions.checkState(type == SubclassType.INHERITS);

        Node subclass = callName.getNext();
        Node superclass = callNode.getLastChild();

        // bail out if either of the side of the "inherits"
        // isn't a real class name. This prevents us from
        // doing something weird in cases like:
        // goog.inherits(MySubClass, cond ? SuperClass1 : BaseClass2)
        if (subclass != null && subclass.isUnscopedQualifiedName() && superclass.isUnscopedQualifiedName()) {
            return new SubclassRelationship(type, subclass, superclass);
        }
    }

    return super.getClassesDefinedByCall(callNode);
}

From source file:com.google.devtools.build.lib.profiler.memory.CurrentRuleTracker.java

public static RuleClass getRule() {
    Preconditions.checkState(enabled);
    return currentRule.get();
}

From source file:com.cloudera.impala.authorization.AuthorizeableTable.java

public AuthorizeableTable(String dbName, String tableName) {
    Preconditions.checkState(tableName != null && !tableName.isEmpty());
    Preconditions.checkState(dbName != null && !dbName.isEmpty());
    table_ = new org.apache.sentry.core.Table(tableName);
    database_ = new org.apache.sentry.core.Database(dbName);
}

From source file:com.facebook.buck.rules.keys.AbstractDependencyFileEntry.java

@Value.Check
protected void check() {
    Preconditions.checkState(!pathToFile().isAbsolute());
    Preconditions.checkState(!pathWithinArchive().isPresent() || !pathWithinArchive().get().isAbsolute());
}

From source file:net.myrrix.online.MultiLongPairRescorer.java

public MultiLongPairRescorer(Rescorer<LongPair>... rescorers) {
    Preconditions.checkNotNull(rescorers);
    Preconditions.checkState(rescorers.length > 0);
    this.rescorers = rescorers;
}

From source file:org.midonet.midolman.state.zkManagers.ConfigWithProperties.java

@JsonIgnore
public <K, V> void setProperty(K key, V val) {

    key = Preconditions.checkNotNull(key);
    val = Preconditions.checkNotNull(val);
    Preconditions.checkState(properties != null);

    properties.put(key.toString(), val.toString());
}

From source file:com.google.javascript.jscomp.newtypes.NamespaceLit.java

@Override
protected JSType computeJSType() {
    Preconditions.checkState(this.namespaceType == null);
    return JSType.fromObjectType(ObjectType.makeObjectType(this.commonTypes,
            this.window == null ? this.commonTypes.getLiteralObjNominalType() : this.window, null, null, this,
            false, ObjectKind.UNRESTRICTED));
}

From source file:org.b1.pack.standard.volume.StandardVolumeService.java

@Override
public VolumeAllocator createVolumeAllocator(VolumeAllocatorProvider provider) {
    String volumeName = provider.getVolumeName();
    long volumeCount = provider.getVolumeCount();
    Matcher matcher = ALLOCATOR_PATTERN.matcher(volumeName);
    Preconditions.checkState(matcher.matches());
    String baseName = matcher.group(1);
    String extension = Objects.firstNonNull(matcher.group(2), ".b1");
    return volumeCount == 0 ? new StandardBasicVolumeAllocator(baseName + extension)
            : new StandardMultipartVolumeAllocator(baseName, volumeCount, extension);
}

From source file:org.excalibur.core.util.MD5.java

public String hash(String message) {
    Preconditions.checkState(!Strings.isNullOrEmpty(message));

    synchronized (this.messageDigest) {
        this.messageDigest.reset();
        this.messageDigest.update(message.getBytes());
        return new String(this.messageDigest.digest());
    }// w  w  w  .j a v a2s . co  m
}

From source file:org.kiji.schema.util.JvmId.java

/**
 * Returns the Unix process ID of this JVM.
 *
 * @return the Unix process ID of this JVM.
 *//*from w ww  .j  a  v  a  2s .  c o m*/
public static int getPid() {
    try {
        final Process process = new ProcessBuilder("/bin/sh", "-c", "echo $PPID").start();
        try {
            Preconditions.checkState(process.waitFor() == 0);
        } catch (InterruptedException ie) {
            throw new RuntimeInterruptedException(ie);
        }
        final String pidStr = IOUtils.toString(process.getInputStream()).trim();
        return Integer.parseInt(pidStr);
    } catch (IOException ioe) {
        throw new KijiIOException(ioe);
    }
}