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

Introduction

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

Prototype

public static <T> T checkNotNull(T reference, @Nullable Object errorMessage)

Source Link

Document

Ensures that an object reference passed as a parameter to the calling method is not null.

Usage

From source file:com.github.jcustenborder.kafka.connect.utils.StructHelper.java

public static SchemaAndValue asSchemaAndValue(Struct struct) {
    Preconditions.checkNotNull(struct, "struct cannot be null.");
    return new SchemaAndValue(struct.schema(), struct);
}

From source file:eu.thebluemountain.customers.dctm.brownbag.badcontentslister.config.JDBCConfig.java

/**
 * The method that creates a new JDBC configuration
 *
 * @param url carries the URL to connect to
 * @param user is the user to connect as
 * @param password is the password to connect with if any
 * @param schema is the default schema to use if any
 * @return the matching configuration/*from w  ww .  j  a v a  2s.  co  m*/
 */
public static JDBCConfig create(String url, String user, Optional<String> password, String schema) {
    return new JDBCConfig(Preconditions.checkNotNull(url, "null url supplied"),
            Preconditions.checkNotNull(user, "null user supplied"),
            Preconditions.checkNotNull(password, "null password supplied"),
            Preconditions.checkNotNull(schema, "null schema supplied"));
}

From source file:com.zaradai.kunzite.optimizer.data.DataRequest.java

public static DataRequest newRequest(UUID requester, InputRow request, Class<? extends Evaluator> evaluator) {
    Preconditions.checkNotNull(requester, "Invalid requester");
    Preconditions.checkNotNull(request, "Invalid request");
    Preconditions.checkNotNull(evaluator, "Invalid evaluator");

    return new DataRequest(requester, request, evaluator);
}

From source file:com.google.security.zynamics.binnavi.ZyGraph.Updaters.CNodeUpdaterInitializer.java

/**
 * Adds node updaters to all nodes of a graph.
 *
 * @param model The model that describes the graph to be initialized.
 *//*from ww  w  .  ja va2 s. c o m*/
public static void addUpdaters(final CGraphModel model) {
    Preconditions.checkNotNull(model, "IE02240: Model argument can not be null");

    model.getGraph().iterate(new INodeCallback<NaviNode>() {
        @Override
        public IterationMode next(final NaviNode node) {
            addUpdaters(model, node);

            return IterationMode.CONTINUE;
        }
    });
}

From source file:com.zaradai.kunzite.optimizer.model.InputRowGenerator.java

public static InputRow getNext(InputRow from) {
    Preconditions.checkNotNull(from, "InputRow cannot be null");

    InputRow res = (InputRow) from.clone();
    increment(res, 0);//from   ww w.  jav a2  s  .  c o m

    return res;
}

From source file:org.onsteroids.eve.api.XmlUtility.java

public static Node getNodeByName(String name, Node parent) {
    Preconditions.checkNotNull(name, "Name");
    Preconditions.checkNotNull(parent, "Parent");
    NodeList list = parent.getChildNodes();
    for (int n = 0; n < list.getLength(); n++) {
        Node node = list.item(n);
        if (name.equals(node.getNodeName())) {
            return node;
        }// w ww.j  a v  a  2s. c  o  m
    }
    throw new IllegalArgumentException("Node " + name + " not found");
}

From source file:org.apache.eagle.metadata.utils.ConfigTemplateHelper.java

public static Configuration unmarshallFromXmlStream(InputStream inputStream) throws JAXBException {
    Preconditions.checkNotNull(inputStream, "Input stream is null");
    try {/*from   www.jav  a2s .  c  o  m*/
        JAXBContext jc = JAXBContext.newInstance(Configuration.class);
        Unmarshaller unmarshaller = jc.createUnmarshaller();
        return (Configuration) unmarshaller.unmarshal(inputStream);
    } catch (Exception ex) {
        LOG.error("Failed to unmarshall ConfigTemplate from stream", ex);
        throw ex;
    }
}

From source file:net.sf.derquinsej.Methods.java

/**
 * Returns the methods of a class as an iterable.
 * @param klass Class to process.//from   w ww.  j a v  a2 s.c  o m
 * @return The methods of the class.
 * @throws NullPointerException if the argument is null.
 */
public static List<Method> getMethods(Class<?> klass) {
    Preconditions.checkNotNull(klass, "A class must be provided");
    return Arrays.asList(klass.getMethods());
}

From source file:org.apache.flume.sink.customhdfs.SequenceFileSerializerFactory.java

@SuppressWarnings("unchecked")
static SequenceFileSerializer getSerializer(String formatType, Context context) {

    Preconditions.checkNotNull(formatType, "serialize type must not be null");

    // try to find builder class in enum of known formatters
    SequenceFileSerializerType type;//from  w  ww .  j  a va2 s.c o m
    try {
        type = SequenceFileSerializerType.valueOf(formatType);
    } catch (IllegalArgumentException e) {
        logger.debug("Not in enum, loading builder class: {}", formatType);
        type = SequenceFileSerializerType.Other;
    }
    Class<? extends SequenceFileSerializer.Builder> builderClass = type.getBuilderClass();

    // handle the case where they have specified their own builder in the config
    if (builderClass == null) {
        try {
            Class c = Class.forName(formatType);
            if (c != null && SequenceFileSerializer.Builder.class.isAssignableFrom(c)) {
                builderClass = (Class<? extends SequenceFileSerializer.Builder>) c;
            } else {
                logger.error("Unable to instantiate Builder from {}", formatType);
                return null;
            }
        } catch (ClassNotFoundException ex) {
            logger.error("Class not found: " + formatType, ex);
            return null;
        } catch (ClassCastException ex) {
            logger.error("Class does not extend " + SequenceFileSerializer.Builder.class.getCanonicalName()
                    + ": " + formatType, ex);
            return null;
        }
    }

    // build the builder
    SequenceFileSerializer.Builder builder;
    try {
        builder = builderClass.newInstance();
    } catch (InstantiationException ex) {
        logger.error("Cannot instantiate builder: " + formatType, ex);
        return null;
    } catch (IllegalAccessException ex) {
        logger.error("Cannot instantiate builder: " + formatType, ex);
        return null;
    }

    return builder.build(context);
}

From source file:com.zaradai.kunzite.optimizer.model.Row.java

public static Row fromSchema(RowSchema schema) {
    Preconditions.checkNotNull(schema, "Invalid schema specified");

    return new Row(InputRow.fromSchema(schema.getInputRowSchema()),
            OutputRow.fromSchema(schema.getOutputRowSchema()));
}