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)

Source Link

Document

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

Usage

From source file:com.sk89q.guavabackport.cache.MoreObjects.java

public static <T> T firstNonNull(@Nullable final T first, @Nullable final T second) {
    return (T) ((first != null) ? first : Preconditions.checkNotNull((Object) second));
}

From source file:com.palantir.atlasdb.keyvalue.partition.endpoint.KeyValueEndpoints.java

public static String makeUniqueRackIfNoneSpecified(String rack) {
    if (PartitionedKeyValueConstants.NO_RACK.equals(rack)) {
        return UUID.randomUUID().toString();
    }/*from ww  w  .j a  v a2  s .c o m*/
    return Preconditions.checkNotNull(rack);
}

From source file:com.palantir.lock.ByteArrayLockDescriptor.java

/** Returns a {@code LockDescriptor} instance for the given lock ID. */
public static LockDescriptor of(byte[] bytes) {
    Preconditions.checkNotNull(bytes);
    return new LockDescriptor(bytes.clone());
}

From source file:com.dangdang.config.service.support.spring.ConfigGroupSourceFactory.java

public static PropertySources create(ConfigGroup... configGroups) {
    Preconditions.checkNotNull(configGroups);
    final MutablePropertySources sources = new MutablePropertySources();
    for (ConfigGroup configGroup : configGroups) {
        sources.addLast(new ConfigGroupResource(configGroup));
    }// w w  w . j  a va 2  s . com
    return sources;
}

From source file:cosmos.options.Order.java

public static String direction(Order o) {
    Preconditions.checkNotNull(o);

    return Order.ASCENDING.equals(o) ? FORWARD : REVERSE;
}

From source file:qa.qcri.qnoise.util.CSVTools.java

/**
 * Loads CSV file into database.//from w w  w .ja  v  a  2  s. c o  m
 * @param file CSV file path.
 * @param dbConfig DB connection config.
 * @param tableName target import table name.
 * @param delimiter CSV delimiter.
 * @return the number of bytes loaded into the target database.
 */
public static int load(String file, DBConfig dbConfig, String tableName, char delimiter) throws Exception {
    Preconditions.checkNotNull(dbConfig);
    Preconditions.checkNotNull(file);

    Connection conn = null;
    Statement stat = null;
    BufferedReader reader = null;
    int result = 0;
    try {
        conn = DBTools.createConnection(dbConfig, true);
        stat = conn.createStatement();
        if (DBTools.existTable(dbConfig, tableName)) {
            stat.executeUpdate("DROP TABLE " + tableName);
        }

        // create table based on the header
        reader = new BufferedReader(new FileReader(file));
        String header = reader.readLine();
        if (!Strings.isNullOrEmpty(header)) {
            String[] columns = header.split(Character.toString(delimiter));
            StringBuilder schemaSql = new StringBuilder("CREATE TABLE " + tableName + " (");
            boolean isFirst = true;
            for (String column : columns) {
                if (!isFirst) {
                    schemaSql.append(",");
                }
                isFirst = false;
                schemaSql.append(column).append(" VARCHAR(10240) ");
            }
            schemaSql.append(")");
            stat.execute(schemaSql.toString());

            SQLDialect dialect = dbConfig.getDialect();
            SQLDialectBase dialectBase = SQLDialectBase.createDialectBaseInstance(dialect);
            if (dialectBase.supportBulkLoad()) {
                result = dialectBase.bulkLoad(dbConfig, tableName, file, delimiter);
            } else {
                throw new UnsupportedOperationException("Non-bulk loading is not yet implemented.");
            }
        }
    } finally {
        try {
            if (stat != null) {
                stat.close();
            }

            if (conn != null) {
                conn.close();
            }

            if (reader != null) {
                reader.close();
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
    return result;
}

From source file:com.ninjas.movietime.core.util.StringUtils.java

@SneakyThrows(UnsupportedEncodingException.class)
public static String encode(final String toEncode) {
    Preconditions.checkNotNull(toEncode);
    return URLEncoder.encode(toEncode, "UTF-8");
}

From source file:com.facebook.buck.java.classes.FileLikes.java

public static boolean isClassFile(FileLike fileLike) {
    Preconditions.checkNotNull(fileLike);
    return fileLike.getRelativePath().endsWith(CLASS_NAME_SUFFIX);
}

From source file:com.chenchengzhi.windtalkers.core.Issue.java

public static Issue of(StatusCode statusCode, String className, String methodName, String reason) {
    Preconditions.checkNotNull(statusCode);
    Preconditions.checkNotNull(className);
    Preconditions.checkNotNull(methodName);
    Preconditions.checkNotNull(reason);//from  w ww  .  j  av a2 s .  c o m
    Issue issue = new Issue(statusCode);
    issue.className = className;
    issue.methodName = methodName;
    issue.reason = reason;
    return issue;
}

From source file:com.github.fommil.ff.physics.Aftertouch.java

static DVector3 asVector(Collection<Aftertouch> touches) {
    Preconditions.checkNotNull(touches);
    DVector3 aftertouch = new DVector3();
    for (Aftertouch touch : touches) {
        assert touch != null;
        switch (touch) {
        case UP:/* w  w  w. j a v  a  2 s  .  c  o m*/
            aftertouch.add(0, 1, 0);
            break;
        case DOWN:
            aftertouch.sub(0, 1, 0);
            break;
        case LEFT:
            aftertouch.sub(1, 0, 0);
            break;
        case RIGHT:
            aftertouch.add(1, 0, 0);
            break;
        }
    }
    if (aftertouch.length() > 0) {
        aftertouch.normalize();
    }
    return aftertouch;
}