Example usage for com.google.common.base Strings isNullOrEmpty

List of usage examples for com.google.common.base Strings isNullOrEmpty

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Introduction

In this page you can find the example usage for com.google.common.base Strings isNullOrEmpty.

Prototype

public static boolean isNullOrEmpty(@Nullable String string)

Source Link

Document

Returns true if the given string is null or is the empty string.

Usage

From source file:org.imsglobal.caliper.validators.TimeValidator.java

/**
 * Check duration String format//from w ww .  j  a va 2 s . com
 * @param duration
 * @throws IllegalArgumentException
 */
public static void checkDuration(String duration) throws IllegalArgumentException {
    if (!(Strings.isNullOrEmpty(duration))) {
        checkArgument(checkPeriodFormat(duration),
                "%s duration format does not conform to ISO 8601 format P[n]Y[n]M[n]DT[n]H[n]M[n]S or P[n]W");
    }
}

From source file:com.talvish.tales.parts.RegularExpressionHelper.java

/**
 * Helper method that makes sure a user supplied regular expression
 * doesn't contain capturing groups, which would otherwise cause problems
 * if the regex is being used for needs where other capturing groups are
 * important/*w w  w . j a v a  2s .  c  o  m*/
 * @param theRegEx the regex to escape
 * @return the non-capturing regex
 */
public final static String toNoncapturingExpression(String theRegEx) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(theRegEx), "need a regex");
    // I feel there is a better way, but this is good enough for now ...
    StringBuilder builder = new StringBuilder();

    int charClassCount = 0;

    int startOffset = 0;
    char currentChar;

    for (int offset = 0; offset < theRegEx.length(); offset += 1) {
        currentChar = theRegEx.charAt(offset);
        if (currentChar == '\\') { // ignore escaping character
            offset += 1;
        } else if (currentChar == '[') { // we are in a capturing group (java supports some nesting, though I don't fully here)
            charClassCount += 1;
        } else if (currentChar == ']') { // we are leaving one
            charClassCount -= 1;
        } else if (currentChar == '(' && charClassCount == 0) {
            if ((offset == theRegEx.length() - 1) || (theRegEx.charAt(offset + 1) != '?')) { // found at the end or next character isn't a quote/meaning non-capturing already
                builder.append(theRegEx.substring(startOffset, offset + 1));
                builder.append("?:"); // turn into a non capturing group
                startOffset = offset + 1;
            }
        }
    }
    builder.append(theRegEx.substring(startOffset, theRegEx.length()));
    return builder.toString();
}

From source file:io.sarl.eclipse.util.AttributeUtil.java

/** Read a boolean value from the given attributes.
 *
 * @param attributes - the attributes.//from   w w  w  . ja v a2 s .co m
 * @param name - the name of the attribute.
 * @param defaultValue - the default value.
 * @return the value of the attribute.
 */
public static boolean get(Map<String, ?> attributes, String name, boolean defaultValue) {
    if (attributes != null && !Strings.isNullOrEmpty(name)) {
        Object value = attributes.get(name);
        if (value != null) {
            if ("true".equalsIgnoreCase(value.toString())) { //$NON-NLS-1$
                return true;
            }
            if ("false".equalsIgnoreCase(value.toString())) { //$NON-NLS-1$
                return false;
            }
        }
    }
    return defaultValue;
}

From source file:org.fenixedu.academic.domain.TeacherCategory.java

public static Optional<TeacherCategory> findByCode(String code) {
    if (Strings.isNullOrEmpty(code)) {
        return Optional.empty();
    }/*from w  w w .  jav a2 s .c o  m*/
    return Bennu.getInstance().getTeacherCategorySet().stream().filter(c -> code.equals(c.getCode())).findAny();
}

From source file:org.haiku.pkg.model.PkgVersion.java

public PkgVersion(String major, String minor, String micro, String preRelease, Integer revision) {
    Preconditions.checkState(!Strings.isNullOrEmpty(major));
    this.major = major;
    this.minor = minor;
    this.micro = micro;
    this.preRelease = preRelease;
    this.revision = revision;
}

From source file:buildcraftAdditions.compat.imc.IMCHandler.java

public static void handleIMC(List<FMLInterModComms.IMCMessage> messages) {

    for (FMLInterModComms.IMCMessage message : messages) {
        String type = message.key;

        if (Strings.isNullOrEmpty(type))
            continue;

        if (type.equalsIgnoreCase("addDustingRecipe")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);/*from   www .  j a  v a  2 s .  co m*/
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Input", "Output", Constants.NBT.TAG_COMPOUND))
                continue;

            ItemStack output = ItemStack.loadItemStackFromNBT(tag.getCompoundTag("Output"));
            if (output == null) {
                logWrongNBT(message);
                continue;
            }
            if (tag.hasKey("Input", Constants.NBT.TAG_STRING)) {
                String oreInput = tag.getString("Input");
                if (!Strings.isNullOrEmpty(oreInput))
                    BCARecipeManager.duster.addRecipe(oreInput, output);
                else
                    logWrongNBT(message);
            } else if (tag.hasKey("Input", Constants.NBT.TAG_COMPOUND)) {
                ItemStack input = ItemStack.loadItemStackFromNBT(tag.getCompoundTag("Input"));
                if (input != null)
                    BCARecipeManager.duster.addRecipe(input, output);
                else
                    logWrongNBT(message);
            } else
                logError(message, "Missing required NBT Tag 'Input' of type STRING or TAG_COMPOUND!");
        } else if (type.equalsIgnoreCase("addCoolingTowerRecipe")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Input", Constants.NBT.TAG_COMPOUND, "Output",
                    Constants.NBT.TAG_COMPOUND, "Heat", Constants.NBT.TAG_FLOAT))
                continue;

            FluidStack input = FluidStack.loadFluidStackFromNBT(tag.getCompoundTag("Input"));
            if (input == null) {
                logNotNBT(message);
                continue;
            }
            FluidStack output = FluidStack.loadFluidStackFromNBT(tag.getCompoundTag("Output"));
            if (output == null) {
                logNotNBT(message);
                continue;
            }
            BCARecipeManager.cooling.addRecipe(input, output, tag.getFloat("Heat"));
        } else if (type.equalsIgnoreCase("addRefineryRecipe")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Input", Constants.NBT.TAG_COMPOUND, "Output",
                    Constants.NBT.TAG_COMPOUND, "RequiredHeat", Constants.NBT.TAG_INT))
                continue;

            FluidStack input = FluidStack.loadFluidStackFromNBT(tag.getCompoundTag("Input"));
            if (input == null) {
                logNotNBT(message);
                continue;
            }
            FluidStack output = FluidStack.loadFluidStackFromNBT(tag.getCompoundTag("Output"));
            if (output == null) {
                logNotNBT(message);
                continue;
            }
            BCARecipeManager.refinery.addRecipe(input, output, tag.getInteger("RequiredHeat"));
        } else if (type.equalsIgnoreCase("removeDustingRecipe")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Input", Constants.NBT.TAG_COMPOUND))
                continue;

            ItemStack input = ItemStack.loadItemStackFromNBT(tag.getCompoundTag("Input"));
            if (input == null) {
                logNotNBT(message);
                continue;
            }
            BCARecipeManager.duster.removeRecipe(input);
        } else if (type.equalsIgnoreCase("removeCoolingRecipe")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Input", Constants.NBT.TAG_COMPOUND))
                continue;

            FluidStack input = FluidStack.loadFluidStackFromNBT(tag.getCompoundTag("Input"));
            if (input == null) {
                logNotNBT(message);
                continue;
            }
            BCARecipeManager.cooling.removeRecipe(input);
        } else if (type.equalsIgnoreCase("removeRefineryRecipe")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Input", Constants.NBT.TAG_COMPOUND))
                continue;

            FluidStack input = FluidStack.loadFluidStackFromNBT(tag.getCompoundTag("Input"));
            if (input == null) {
                logNotNBT(message);
                continue;
            }
            BCARecipeManager.refinery.removeRecipe(input);
        } else if (type.equalsIgnoreCase("addMetalDust")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Meta", Constants.NBT.TAG_INT, "Name",
                    Constants.NBT.TAG_STRING, "ColorMultiplier", Constants.NBT.TAG_INT))
                continue;

            BCAItemManager.dusts.addDust(tag.getInteger("Meta"), tag.getString("Name"),
                    tag.getInteger("ColorMultiplier"), DustTypes.METAL_DUST);
        } else if (type.equalsIgnoreCase("addGemDust")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Meta", Constants.NBT.TAG_INT, "Name",
                    Constants.NBT.TAG_STRING, "ColorMultiplier", Constants.NBT.TAG_INT))
                continue;

            BCAItemManager.dusts.addDust(tag.getInteger("Meta"), tag.getString("Name"),
                    tag.getInteger("ColorMultiplier"), DustTypes.GEM_DUST);
        } else if (type.equalsIgnoreCase("addDust")) {
            if (!message.isNBTMessage()) {
                logNotNBT(message);
                continue;
            }

            NBTTagCompound tag = message.getNBTValue();
            if (hasNotAllRequiredTags(message, tag, "Meta", Constants.NBT.TAG_INT, "Name",
                    Constants.NBT.TAG_STRING, "ColorMultiplier", Constants.NBT.TAG_INT, "DustType",
                    Constants.NBT.TAG_STRING))
                continue;

            String className = tag.getString("DustType");
            if (Strings.isNullOrEmpty(className)) {
                logWrongNBT(message);
                continue;
            }
            IDustType iDustType;
            try {
                iDustType = (IDustType) Class.forName(className).newInstance();
            } catch (Throwable t) {
                logWrongNBT(message);
                continue;
            }
            BCAItemManager.dusts.addDust(tag.getInteger("Meta"), tag.getString("Name"),
                    tag.getInteger("ColorMultiplier"), iDustType);
        } else if (type.equalsIgnoreCase("removeDust")) {
            if (!message.isStringMessage()) {
                logNotString(message);
                continue;
            }

            String string = message.getStringValue();
            if (Strings.isNullOrEmpty(string)) {
                logError(message, "The string is null or empty!");
                continue;
            }
            try {
                BCAItemManager.dusts.removeDust(Integer.valueOf(string));
            } catch (NumberFormatException e) {
                BCAItemManager.dusts.removeDust(string);
            }
        } else {
            logError(message, "Message type not supported!");
        }
    }
}

From source file:com.google.idea.blaze.base.sync.data.BlazeDataStorage.java

public static File getProjectCacheDir(Project project, BlazeImportSettings importSettings) {
    String locationHash = importSettings.getLocationHash();

    // Legacy support: The location hash used to be just the project hash
    if (Strings.isNullOrEmpty(locationHash)) {
        locationHash = project.getLocationHash();
    }/* w w  w  .j  av  a 2s. c  om*/

    return new File(getProjectConfigurationDir(), locationHash);
}

From source file:co.cask.cdap.template.etl.common.ETLUtils.java

/**
 * Parses a duration String to its long value.
 * Frequency string consists of a number followed by an unit, with 's' for seconds, 'm' for minutes, 'h' for hours
 * and 'd' for days. For example, an input of '5m' means 5 minutes which will be parsed to 300000 milliseconds.
 *
 * @param durationStr the duration string (ex: 5m, 5h etc).
 * @return long which is milliseconds equivalent of the duration string
 *//*from www  .  j  a  va  2  s  .  com*/
public static long parseDuration(String durationStr) {
    //TODO: replace with TimeMathParser (available only internal to cdap)
    Preconditions.checkArgument(!Strings.isNullOrEmpty(durationStr));
    durationStr = durationStr.toLowerCase();

    String value = durationStr.substring(0, durationStr.length() - 1);
    int parsedValue = 0;
    try {
        parsedValue = Integer.parseInt(value);
    } catch (NumberFormatException nfe) {
        Throwables.propagate(nfe);
    }
    Preconditions.checkArgument(parsedValue >= 0);

    char lastChar = durationStr.charAt(durationStr.length() - 1);
    switch (lastChar) {
    case 's':
        return TimeUnit.SECONDS.toMillis(parsedValue);
    case 'm':
        return TimeUnit.MINUTES.toMillis(parsedValue);
    case 'h':
        return TimeUnit.HOURS.toMillis(parsedValue);
    case 'd':
        return TimeUnit.DAYS.toMillis(parsedValue);
    }
    throw new IllegalArgumentException(String.format("Time unit not supported: %s", lastChar));
}

From source file:com.zaradai.kunzite.trader.events.TradeEvent.java

public static TradeEvent newTrade(String portfolioId, String instrumentId, long quantity, double price,
        DateTime timestamp) {/*w  w w .j  a  v a  2  s.c o m*/
    checkArgument(!Strings.isNullOrEmpty(portfolioId), "Invalid portfolio");
    checkArgument(!Strings.isNullOrEmpty(instrumentId), "Invalid instrument");
    checkArgument(!Double.isNaN(price), "Invalid price");
    checkNotNull(timestamp, "Invalid timestamp");

    return new TradeEvent(portfolioId, instrumentId, quantity, price, timestamp);
}

From source file:org.imsglobal.caliper.validators.SensorValidator.java

/**
 * Check if Client identifier is null or empty.
 * @param id/* ww  w  .j  ava2 s .  c  om*/
 * @throws IllegalArgumentException
 */
public static void checkClientId(String id) throws IllegalArgumentException {
    checkArgument(!(Strings.isNullOrEmpty(id)), "Client identifier must be specified");
}