Example usage for org.apache.commons.lang ArrayUtils EMPTY_STRING_ARRAY

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Prototype

String[] EMPTY_STRING_ARRAY

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An empty immutable String array.

Usage

From source file:org.soaplab.services.cmdline.IOParameter.java

/**************************************************************************
 *
 **************************************************************************/
protected synchronized List<String> build(Map<String, Object> inputs, Job job, String tagPrefix)
        throws ParameterException {

    // clean-up/*from  w  w w  . j a  va2  s  .c o  m*/
    // (TBD: this is bad, it makes this class not thread-safe...)
    ioData = new ArrayList<IOData>();

    // get values
    String[] values = null;
    boolean isDirect = isValueDirect(inputs);
    Object value = adaptInput(getRealValue(inputs, isDirect), job);
    if (value == null) {
        String defaultValue = paramDef.dflt;
        isDirect = paramDef.is(SoaplabConstants.DEFAULT_FOR_DIRECT);

        // ignore default value for outputs (unless it is a name
        // of a standard stream)
        if (((IOParamDef) paramDef).isRegularOutput())
            defaultValue = "";

        // ignore default value for standard streams (because
        // it contains just a name of such stream)
        if (StringUtils.isNotEmpty(defaultValue) && !((IOParamDef) paramDef).isStandardStream()) {
            values = new String[] { addToIOData(isDirect, defaultValue, job, "") };
        } else {
            if (((IOParamDef) paramDef).isRegularInput()) {
                // here we have to check mandatorness
                if (paramDef.is(ParamDef.MANDATORY)) {
                    throw new ParameterException(paramDef.id, "Input is mandatory and cannot remain empty.");
                }
                values = ArrayUtils.EMPTY_STRING_ARRAY;
            } else {
                // except for regular INPUT, we need to create an IOData
                String ref = null;
                if (((IOParamDef) paramDef).isStdin()) {
                    // ...and empty file for STDIN
                    ref = addToIOData(true, "", job, "");
                } else {
                    // ...and only a name of a file for outputs  // STDOUT and STDERR
                    ref = addToIOData(false, null, job, "");
                }
                if (ref == null || ((IOParamDef) paramDef).isStandardStream()) {
                    values = ArrayUtils.EMPTY_STRING_ARRAY;
                } else {
                    values = new String[] { ref };
                }
            }
        }

    } else if (value.getClass().isArray() && !(value instanceof byte[])) {
        Object[] vals = (Object[]) value;
        values = new String[vals.length];
        for (int i = 0; i < vals.length; i++) {
            values[i] = addToIOData(isDirect, vals[i], job, String.format("%03d", i));
        }
    } else {
        values = new String[] { addToIOData(isDirect, value, job, "") };
    }

    // check values
    checkRepeatability(values.length);
    if (values.length == 0)
        return CmdLineJob.EMPTY_LIST;

    // no argument is needed for STDIN
    if (((IOParamDef) paramDef).isStdin())
        return CmdLineJob.EMPTY_LIST;

    // build args from values
    if (StringUtils.isBlank(paramDef.get(ParamDef.METHOD))) {

        // no METHOD defined, so do it traditionally, with tags
        List<String> result = new ArrayList<String>();
        String tag = paramDef.get(ParamDef.TAG);
        for (int i = 0; i < values.length; i++)
            result.addAll(taggedArg(tagPrefix, tag, values[i]));
        return result;

    } else {
        // use parameter template (METHOD) to create one or more
        // command-line arguments
        return createArgByMethod(new DefaultParameterAccessor(paramDef.id, paramDef.get(ParamDef.TAG), values));
    }
}

---

From source file:org.soaplab.services.cmdline.StdParameter.java

/**************************************************************************
 * Extract and return values for this parameter from 'inputs', or
 * from default. Return an empty array (not null) if there was no
 * value in 'inputs' and no default value is defined.
 *
 * The returned value can have more values if this parameter is
 * repetitive (more precisely: if the Object representing this
 * parameter in 'inputs' is an array). This method also checks if
 * the repetitivness is allowed for this parameter.
 *
 * Parameter 'job' (where this parameter belongs to) is not used
 * here.//w w w.  ja va  2  s  .  co m
 **************************************************************************/
protected String[] getValues(Map<String, Object> inputs, Job job) throws ParameterException {

    String[] values = null;
    Object value = inputs.get(paramDef.id);
    if (value == null) {
        String defaultValue = getDefaultValue();
        values = (defaultValue == null ? ArrayUtils.EMPTY_STRING_ARRAY : new String[] { defaultValue });
    } else if (value.getClass().isArray()) {
        Object[] vals = (Object[]) value;
        values = new String[vals.length];
        for (int i = 0; i < vals.length; i++)
            values[i] = vals[i].toString();
    } else {
        values = new String[] { value.toString() };
    }

    // check values
    checkRepeatability(values.length);

    return values;
}

---

From source file:org.soaplab.services.cmdline.StdParameter.java

/**************************************************************************
 *
 **************************************************************************/
public String[] createArg(Map<String, Object> inputs, Job job) throws ParameterException {

    if (paramDef.is(ParamDef.ENVAR))
        return ArrayUtils.EMPTY_STRING_ARRAY;

    List<String> built = build(inputs, job, CMD);
    return built.toArray(new String[] {});
}

---

From source file:org.soaplab.services.Config.java

/**************************************************************************
 * Almost the same functionality as {@link #getString getString}
 * method - see there details about parameters. The different is
 * the return value - it allows to return several values of the
 * same property. In the configuration file, the property can be
 * repeated, or can have several comma-separated values. <p>
 *
 * @return all values of the given property, or - if such property
 * does not exist - return a one-element array with the
 * 'defaultValue' unless the 'defaultValue' is also null in which
 * case return an empty array/*w  ww.j a  v a  2 s  .  c  o  m*/
 **************************************************************************/
public static String[] getStrings(String key, String defaultValue, String serviceName, Object owner) {
    String[] values = null;
    if (serviceName != null) {
        values = get().getStringArray(serviceName + "." + key);
        if (values.length > 0)
            return values;
    }
    if (owner != null) {
        values = get().getStringArray(
                (owner instanceof Class ? ((Class) owner).getName() : owner.getClass().getName()) + "." + key);
        if (values.length > 0)
            return values;
    }
    values = get().getStringArray(key);
    if (values.length > 0)
        return values;

    if (defaultValue == null)
        return ArrayUtils.EMPTY_STRING_ARRAY;
    else
        return new String[] { defaultValue };
}

---

From source file:org.sonar.api.ce.measure.test.TestSettings.java

@Override
public String[] getStringArray(String key) {
    String value = getString(key);
    if (value != null) {
        String[] strings = StringUtils.splitByWholeSeparator(value, ",");
        String[] result = new String[strings.length];
        for (int index = 0; index < strings.length; index++) {
            result[index] = StringUtils.trim(strings[index]);
        }//  w w w .j ava  2  s. c om
        return result;
    }
    return ArrayUtils.EMPTY_STRING_ARRAY;
}

---

From source file:org.sonar.api.config.Settings.java

/**
 * Value is split by comma and trimmed. Never returns null.
 * <p/>//from w ww.  jav a  2s.c  om
 * Examples :
 * <ul>
 * <li>"one,two,three " -> ["one", "two", "three"]</li>
 * <li>"  one, two, three " -> ["one", "two", "three"]</li>
 * <li>"one, , three" -> ["one", "", "three"]</li>
 * </ul>
 */
public final String[] getStringArray(String key) {
    PropertyDefinition property = getDefinitions().get(key);
    if ((null != property) && (property.isMultiValues())) {
        String value = getString(key);
        if (value == null) {
            return ArrayUtils.EMPTY_STRING_ARRAY;
        }

        List<String> values = Lists.newArrayList();
        for (String v : Splitter.on(",").trimResults().split(value)) {
            values.add(v.replace("%2C", ","));
        }
        return values.toArray(new String[values.size()]);
    }

    return getStringArrayBySeparator(key, ",");
}

---

From source file:org.sonar.api.config.Settings.java

/**
 * Value is split by carriage returns./*from   w w  w  . j a  v  a2  s.  com*/
 *
 * @return non-null array of lines. The line termination characters are excluded.
 * @since 3.2
 */
public final String[] getStringLines(String key) {
    String value = getString(key);
    if (Strings.isNullOrEmpty(value)) {
        return ArrayUtils.EMPTY_STRING_ARRAY;
    }
    return value.split("\r?\n|\r", -1);
}

---

From source file:org.sonar.api.config.Settings.java

/**
 * Value is splitted and trimmed./* ww  w. java  2s. c om*/
 */
public final String[] getStringArrayBySeparator(String key, String separator) {
    String value = getString(key);
    if (value != null) {
        String[] strings = StringUtils.splitByWholeSeparator(value, separator);
        String[] result = new String[strings.length];
        for (int index = 0; index < strings.length; index++) {
            result[index] = StringUtils.trim(strings[index]);
        }
        return result;
    }
    return ArrayUtils.EMPTY_STRING_ARRAY;
}

---

From source file:org.sonar.batch.scan.filesystem.ExclusionFilters.java

private String[] computeTestInclusions() {
    if (exclusionSettings.testInclusions().length > 0) {
        // User defined params
        return exclusionSettings.testInclusions();
    }/*from   w  w w .j a va 2 s  .  c  om*/
    return ArrayUtils.EMPTY_STRING_ARRAY;
}

---

From source file:org.sonar.graph.DsmScanner.java

private String[] splitLine(String line) {
    if (line == null) {
        return ArrayUtils.EMPTY_STRING_ARRAY;
    }//w  w  w . j  a  va2 s  .  c om
    String[] tokens = line.split("\\" + CELL_SEPARATOR);
    String[] result = new String[tokens.length];
    for (int i = 0; i < tokens.length; i++) {
        result[i] = tokens[i].trim();
    }
    return result;
}

---

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