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

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.obiba.mica.core.domain.AttributeKey.java

public static String getMapKey(String name, @Nullable String namespace) {
    return Strings.isNullOrEmpty(namespace) ? name : namespace + "__" + name;
}

From source file:uapi.helper.StringHelper.java

public static String makeString(String str, Object... args) {
    if (Strings.isNullOrEmpty(str)) {
        return str;
    }//w  ww. j  a va2  s.  com
    StringBuilder buffer = new StringBuilder();
    boolean foundVarStart = false;
    int idxVar = 0;
    int tmpIdx = -1;
    for (int i = 0; i < str.length(); i++) {
        char c = str.charAt(i);
        if (c == VAR_START) {
            foundVarStart = true;
        } else if (c == VAR_END) {
            if (foundVarStart) {
                if (tmpIdx != -1) {
                    idxVar = tmpIdx;
                }
                if (args.length <= idxVar) {
                    throw new IllegalArgumentException("The argument index is more than argument count - " + str
                            + "," + CollectionHelper.asString(args));
                }
                buffer.append(args[idxVar]);
                foundVarStart = false;
                idxVar++;
                tmpIdx = -1;
            } else {
                buffer.append(c);
            }
        } else {
            if (foundVarStart) {
                if (c >= '0' && c <= '9') {
                    if (tmpIdx == -1) {
                        tmpIdx = 0;
                    }
                    tmpIdx = tmpIdx * 10 + Character.getNumericValue(c);
                } else {
                    buffer.append(VAR_START);
                    if (tmpIdx != -1) {
                        buffer.append(tmpIdx);
                        tmpIdx = -1;
                    } else {
                        buffer.append(c);
                    }
                    foundVarStart = false;
                }
            } else {
                buffer.append(c);
            }
        }
    }
    return buffer.toString();
}

From source file:org.xacml4j.v30.types.RFC822NameExp.java

public static RFC822NameExp of(String v) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(v));
    return new RFC822NameExp(RFC822Name.parse(v));
}

From source file:org.glowroot.agent.BaseDir.java

public static File getBaseDir(@Nullable String baseDirPath, @Nullable File glowrootJarFile) {
    if (glowrootJarFile == null) {
        // this is only for test support
        checkNotNull(baseDirPath, "Property base.dir is required when no glowroot jar file");
        return new File(baseDirPath);
    }/*from  ww  w.j av a  2 s. com*/
    // empty check to support parameterized script, e.g. -Dglowroot.base.dir=${somevar}
    if (Strings.isNullOrEmpty(baseDirPath)) {
        return getDefaultBaseDir(glowrootJarFile);
    }
    File baseDir = new File(baseDirPath);
    if (!baseDir.isAbsolute()) {
        return getRelativeBaseDir(baseDirPath, glowrootJarFile);
    }
    return getAbsoluteBaseDir(baseDir);
}

From source file:br.cic.unb.chord.util.ReflectionUtil.java

public static Object newInstance(String clazz) {
    checkState(!Strings.isNullOrEmpty(clazz));

    try {/*from www  .java  2 s . c o m*/
        return Class.forName(clazz).newInstance();
    } catch (Exception exception) {
        throw new RuntimeException(exception);
    }
}

From source file:de.dominikschadow.duke.encounters.enums.Likelihood.java

public static Likelihood fromString(String value) {
    if (!Strings.isNullOrEmpty(value)) {
        for (Likelihood l : Likelihood.values()) {
            if (value.equals(l.toString())) {
                return l;
            }/* www  . ja  va2s  .  c o  m*/
        }
    }

    throw new IllegalArgumentException("No enum found for " + value);
}

From source file:org.onehippo.cms7.essentials.dashboard.utils.PayloadUtils.java

public static List<String> extractValueList(final String value) {
    if (Strings.isNullOrEmpty(value)) {
        return Collections.emptyList();
    }/*w w  w  . j av  a 2s .  c o  m*/
    final Splitter splitter = Splitter.on(",").omitEmptyStrings().trimResults();
    final Iterable<String> iterable = splitter.split(value);
    return Lists.newArrayList(iterable);
}

From source file:org.apache.isis.schema.utils.jaxbadapters.JodaDateTimeStringAdapter.java

public static DateTime parse(final String date) {
    return !Strings.isNullOrEmpty(date) ? formatter.parseDateTime(date) : null;
}

From source file:local.laer.app.newgenerator.ExtensionBuilder.java

public static String defaultExtension(TileSection section) {
    String headlineExt = (section.getHeadline() == null) ? "nohead" : null;
    String contentExt = (section.getContent() == null) ? "notext" : null;
    String resourceExt = Optional.ofNullable(section.getResources()).map(Map::keySet)
            .map(set -> String.join("-", set)).orElse(null);

    String ext = Lists.newArrayList(headlineExt, contentExt, resourceExt).stream().filter(e -> e != null)
            .collect(Collectors.joining("-"));

    if (Strings.isNullOrEmpty(ext)) {
        return "normal";
    } else {/* www . ja  v a 2 s. c o  m*/
        return ext;
    }
}

From source file:net.minecraftforge.fml.common.versioning.VersionParser.java

public static ArtifactVersion parseVersionReference(String labelledRef) {
    if (Strings.isNullOrEmpty(labelledRef)) {
        throw new RuntimeException(String.format("Empty reference %s", labelledRef));
    }//from  ww w  .  jav  a  2 s. c o  m
    List<String> parts = Lists.newArrayList(SEPARATOR.split(labelledRef));
    if (parts.size() > 2) {
        throw new RuntimeException(String.format("Invalid versioned reference %s", labelledRef));
    }
    if (parts.size() == 1) {
        return new DefaultArtifactVersion(parts.get(0), true);
    }
    return new DefaultArtifactVersion(parts.get(0), parseRange(parts.get(1)));
}