Example usage for java.util List isEmpty

Introduction

In this page you can find the example usage for java.util List isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this list contains no elements.

Usage

From source file:gobblin.util.DatasetFilterUtils.java

/**
 * A topic survives if (1) it doesn't match the blacklist, and
 * (2) either whitelist is empty, or it matches the whitelist.
 * Whitelist and blacklist use regex patterns (NOT glob patterns).
 *//*  www .j  av  a  2s  .  c  o  m*/
public static boolean survived(String topic, List<Pattern> blacklist, List<Pattern> whitelist) {
    if (stringInPatterns(topic, blacklist)) {
        return false;
    }
    return (whitelist.isEmpty() || stringInPatterns(topic, whitelist));
}

From source file:net.sf.jabref.logic.journals.Abbreviations.java

public static void initializeJournalNames(JabRefPreferences jabRefPreferences) {
    journalAbbrev = new JournalAbbreviationRepository();

    // the order of reading the journal lists is important
    // method: last added abbreviation wins
    // for instance, in the personal list one can overwrite abbreviations in the built in list

    // Read builtin list
    journalAbbrev.readJournalListFromResource(JOURNALS_FILE_BUILTIN);

    // read IEEE list
    if (jabRefPreferences.getBoolean(JabRefPreferences.USE_IEEE_ABRV)) {
        journalAbbrev.readJournalListFromResource(JOURNALS_IEEE_ABBREVIATION_LIST_WITH_CODE);
    } else {/*from  w ww .  jav a  2  s.c  om*/
        journalAbbrev.readJournalListFromResource(JOURNALS_IEEE_ABBREVIATION_LIST_WITH_TEXT);
    }

    // Read external lists
    List<String> lists = jabRefPreferences.getStringList(JabRefPreferences.EXTERNAL_JOURNAL_LISTS);
    if (!(lists.isEmpty())) {
        Collections.reverse(lists);
        for (String filename : lists) {
            try {
                journalAbbrev.readJournalListFromFile(new File(filename));
            } catch (FileNotFoundException e) {
                // The file couldn't be found... should we tell anyone?
                LOGGER.info("Cannot find external journal list file " + filename, e);
            }
        }
    }

    // Read personal list
    String personalJournalList = jabRefPreferences.get(JabRefPreferences.PERSONAL_JOURNAL_LIST);
    if ((personalJournalList != null) && !personalJournalList.trim().isEmpty()) {
        try {
            journalAbbrev.readJournalListFromFile(new File(personalJournalList));
        } catch (FileNotFoundException e) {
            LOGGER.info("Personal journal list file '" + personalJournalList + "' not found.", e);
        }
    }

}

From source file:Main.java

private static List<Object> interleave(Collection<? extends Object> collection, String separator) {
    List<Object> interleaved = new ArrayList<Object>();
    for (Object object : collection) {
        interleaved.add(object);/*from   w ww.ja v a2s .c o  m*/
        interleaved.add(separator);
    }
    if (!interleaved.isEmpty()) {
        interleaved.remove(interleaved.size() - 1);
    }
    return interleaved;
}

From source file:com.fizzed.stork.launcher.Merger.java

static public void merge(List<File> configFiles, File outputFile) throws IOException {
    // validate required arguments
    if (configFiles == null || configFiles.isEmpty()) {
        throw new IllegalArgumentException("No input config files were found");
    }/*from   ww w . j a v  a 2 s .  c o  m*/

    if (outputFile == null) {
        throw new IOException("no output file was specified");
    }

    ConfigurationFactory factory = new ConfigurationFactory();
    JsonNode mergedNode = null;

    // parse each configuration file into a configuration object
    for (File configFile : configFiles) {
        try {
            JsonNode updateNode = factory.createConfigNode(configFile);
            if (mergedNode == null) {
                mergedNode = updateNode;
            } else {
                mergedNode = factory.mergeNodes(mergedNode, updateNode);
            }
        } catch (Exception e) {
            throw new IOException("Config file [" + configFile + "] invalid");
        }
    }

    try {
        // write merged file back out
        factory.getMapper().writeValue(outputFile, mergedNode);
        System.out.println("Wrote merged config file: " + outputFile);
    } catch (Exception e) {
        throw new IOException("Unable to cleanly write merged config");
    }
}

From source file:com.comcast.cats.monitor.util.FileSearchUtil.java

public static List<String> getLinesByRegexList(String filePath, List<String> expressions) throws IOException {
    if ((null == expressions) || (expressions.isEmpty()) || (null == filePath) || (filePath.isEmpty())) {
        throw new IllegalArgumentException("Expressions/FilePath is NULL of EMPTY !!!");
    }//from w  w w .  j a  v a2  s  .  c o m

    String combainedExpression = null;

    for (String expression : expressions) {
        combainedExpression += OR + expression;
    }

    return getLinesByRegex(filePath, combainedExpression);
}

From source file:com.ciphertool.sentencebuilder.dao.BasicWordMapDao.java

/**
 * @param allWords/*from  ww  w .  j  a  va  2s  . com*/
 *            the List of all Words pulled in from the constructor
 * @return a Map of all Words keyed by their PartOfSpeech
 */
protected static HashMap<PartOfSpeechType, ArrayList<Word>> mapByPartOfSpeech(List<Word> allWords) {
    if (allWords == null || allWords.isEmpty()) {
        throw new IllegalArgumentException(
                "Error mapping Words by PartOfSpeech.  The supplied List of Words cannot be null or empty.");
    }

    HashMap<PartOfSpeechType, ArrayList<Word>> byPartOfSpeech = new HashMap<PartOfSpeechType, ArrayList<Word>>();
    for (Word w : allWords) {
        PartOfSpeechType pos = w.getId().getPartOfSpeech();

        // Add the part of speech to the map if it doesn't exist
        if (!byPartOfSpeech.containsKey(pos)) {
            byPartOfSpeech.put(pos, new ArrayList<Word>());
        }

        /*
         * Add the word to the map by reference a number of times equal to
         * the frequency value
         */
        for (int i = 0; i < w.getFrequencyWeight(); i++) {
            byPartOfSpeech.get(pos).add(w);
        }
    }
    return byPartOfSpeech;
}

From source file:de.oth.keycloak.initKeycloakServer.IT_TestAuth.java

@BeforeClass
public static void setUpClass() throws IOException {
    keycloak = initKeycloak(SERVER, REALM, USER, PWD, CLIENTSTR);
    String initFileStr = "integration_test_config.json";
    File initFile = new File(initFileStr);
    if (!initFile.isFile()) {
        URL url = TestRun.class.getClassLoader().getResource(initFileStr);
        if (url != null) {
            initFile = new File(url.getFile());
            if (!initFile.isFile()) {
                fail("test config is no file: " + initFileStr);
            }// w w w .  j  a  v a  2 s .  c  om
        } else {
            fail("can't load test config: " + initFileStr);
        }
    }

    RealmResource rRes = KeycloakAccess.getRealm(keycloak, GM_REALM, false);
    if (rRes != null) {
        rRes.remove();
    }
    rRes = KeycloakAccess.getRealm(keycloak, APP_REALM, false);
    if (rRes != null) {
        rRes.remove();
    }
    ObjectMapper mapper = new ObjectMapper();
    RealmsConfig realmsConfig = mapper.readValue(initFile, RealmsConfig.class);

    if (realmsConfig != null) {
        List<RealmConfig> realmList = realmsConfig.getRealms();
        if (realmList == null || realmList.isEmpty()) {
            fail("realmList is empty: " + initFileStr);
        }
        for (RealmConfig realmConf : realmList) {
            InitKeycloakServer.addRealm(keycloak, realmConf);
        }
    } else {
        fail("no realm config found in: " + initFileStr);
    }
}

From source file:com.ciphertool.sentencebuilder.dao.BasicWordMapDao.java

/**
 * @param allWords//from   www.j  a  va 2 s.  co m
 *            the List of all Words pulled in from the constructor
 * @return a Map of all Words keyed by their length
 */
protected static HashMap<Integer, ArrayList<Word>> mapByWordLength(List<Word> allWords) {
    if (allWords == null || allWords.isEmpty()) {
        throw new IllegalArgumentException(
                "Error mapping Words by length.  The supplied List of Words cannot be null or empty.");
    }

    HashMap<Integer, ArrayList<Word>> byWordLength = new HashMap<Integer, ArrayList<Word>>();

    for (Word w : allWords) {
        Integer length = w.getId().getWord().length();

        // Add the part of speech to the map if it doesn't exist
        if (!byWordLength.containsKey(length)) {
            byWordLength.put(length, new ArrayList<Word>());
        }

        /*
         * Add the word to the map by reference a number of times equal to
         * the frequency value
         */
        for (int i = 0; i < w.getFrequencyWeight(); i++) {
            byWordLength.get(length).add(w);
        }
    }

    return byWordLength;
}

From source file:Main.java

/**
 * @param n a root node to search beneath
 * @param name a node name to look for/*from ww w  .j a v a 2  s .  c om*/
 * @return the first instance of that node name in the tree beneath the root
 * (depth first)
 */
public static Node findFirstNodeRecursive(Node n, String name) {
    List<Node> nodes = new ArrayList<>();
    findRecursive(n, name, nodes, true);
    if (nodes.isEmpty()) {
        return null;
    }
    return nodes.get(0);
}

From source file:Main.java

/**
 * Gets the first direct child of the given node with a node named {@code nodeName} that has an
 * attribute named {@code attributeName} with a value that matches one of {@code attributeValues}.
 *
 * Only direct children are checked./*from   w  w  w .  j a va  2 s.c  o m*/
 *
 * @param nodeName matching nodes must have this name.
 * @param attributeName matching nodes must have an attribute with this name.
 *                      Use null to match nodes with any attributes.
 * @param attributeValues all matching child nodes' matching attribute will have a value that
 *                        matches one of these values. Use null to match nodes with any attribute
 *                        value.
 */
static Node getFirstMatchingChildNode(final Node node, final String nodeName, final String attributeName,
        final List<String> attributeValues) {
    if (node == null || nodeName == null) {
        return null;
    }

    final List<Node> nodes = getMatchingChildNodes(node, nodeName, attributeName, attributeValues);
    if (nodes != null && !nodes.isEmpty()) {
        return nodes.get(0);
    }
    return null;
}