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.jboss.hal.dmr.ResourceAddress.java

/** Creates a new resource address from the specified string. */
public static ResourceAddress from(String address) {
    if (Strings.isNullOrEmpty(address)) {
        throw new IllegalArgumentException("Address must not be null or empty");
    }// w  w  w  .ja  v  a  2s . co  m
    String safeAddress = address.startsWith("/") ? address.substring(1) : address;
    ResourceAddress ra = new ResourceAddress();
    Map<String, String> segments = Splitter.on('/').omitEmptyStrings().withKeyValueSeparator('=')
            .split(safeAddress);
    for (Map.Entry<String, String> entry : segments.entrySet()) {
        ra.add(entry.getKey(), entry.getValue());
    }
    return ra;
}

From source file:org.libreoffice.ci.gerrit.buildbot.servlets.RenderType.java

public static RenderType getFormatType(HttpServletRequest req) {
    RenderType result = (RenderType) req.getAttribute(FORMAT_TYPE_ATTRIBUTE);
    if (result != null) {
        return result;
    }//from   www  . j  ava2 s . c om

    String format = req.getParameter("format");
    if (format != null) {
        for (RenderType type : RenderType.values()) {
            if (format.equalsIgnoreCase(type.name())) {
                return set(req, type);
            }
        }
        throw new IllegalArgumentException("Invalid format " + format);
    }

    String accept = req.getHeader(HttpHeaders.ACCEPT);
    if (Strings.isNullOrEmpty(accept)) {
        return set(req, DEFAULT);
    }

    for (String p : accept.split("[ ,;][ ,;]*")) {
        for (RenderType type : RenderType.values()) {
            if (p.equals(type.mimeType)) {
                return set(req, type != HTML ? type : DEFAULT);
            }
        }
    }
    return set(req, DEFAULT);
}

From source file:org.apache.isis.viewer.wicket.ui.util.CssIdAppender.java

/**
 * Adds CSS id to tag (providing that the id is non-null and non-empty).
 *//*  w ww . jav a 2 s . c  o m*/
public static void appendCssIdTo(final ComponentTag tag, final String cssId) {
    if (Strings.isNullOrEmpty(cssId)) {
        return;
    }
    tag.append("id", cssId, " ");
}

From source file:org.apache.isis.core.metamodel.facets.object.parseable.annotcfg.ParseableFacetAnnotation.java

private static String parserName(final Class<?> annotatedClass, final IsisConfiguration configuration) {
    final Parseable annotation = annotatedClass.getAnnotation(Parseable.class);
    final String parserName = annotation.parserName();
    if (!Strings.isNullOrEmpty(parserName)) {
        return parserName;
    }/*from  ww  w  .  j a v a  2 s . c  o m*/
    return ParserUtil.parserNameFromConfiguration(annotatedClass, configuration);
}

From source file:uapi.common.StringHelper.java

public static String makeString(final String str, Object... args) {
    if (Strings.isNullOrEmpty(str)) {
        return str;
    }/*from   w  ww.  j  av a 2  s .c o  m*/
    if (args == null) {
        args = CollectionHelper.EMPTY_ARRAY;
    }
    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 && tmpIdx < args.length) {
                    buffer.append(args[tmpIdx] == null ? "" : args[tmpIdx]);
                } else if (idxVar < args.length) {
                    buffer.append(args[idxVar] == null ? "" : args[idxVar]);
                } else {
                    buffer.append(VAR_START).append(tmpIdx == -1 ? "" : tmpIdx).append(VAR_END);
                }
                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;
                    }
                    buffer.append(c);
                    foundVarStart = false;
                }
            } else {
                buffer.append(c);
            }
        }
    }
    if (foundVarStart) {
        buffer.append(VAR_START).append(tmpIdx == -1 ? "" : tmpIdx);
    }
    return buffer.toString();
}

From source file:org.locationtech.geogig.repository.LocalRemoteRefSpec.java

public static List<LocalRemoteRefSpec> parse(final String remoteName, final String refspecs) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(remoteName));
    Preconditions.checkArgument(!Strings.isNullOrEmpty(remoteName.trim()));
    Preconditions.checkArgument(!Strings.isNullOrEmpty(refspecs), "no refspecs provided");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(refspecs.trim()), "no refspecs provided");

    List<String> refs = Splitter.on(';').omitEmptyStrings().trimResults().splitToList(refspecs);
    return refs.stream().map(spec -> LocalRemoteRefSpec.parseSingle(remoteName, spec))
            .collect(Collectors.toList());
}

From source file:de.aikiit.fotorenamer.image.ImageFilenameFilter.java

private static boolean isSuffixExifExtractable(final String name) {
    if (!Strings.isNullOrEmpty(name)) {
        String file = name.trim().toLowerCase();
        for (String suffix : EXTENSIONS) {
            if (file.endsWith("." + suffix)) {
                return true;
            }/* w  w w  .  java 2 s  .c o m*/
        }
    }
    return false;

}

From source file:org.n52.janmayen.Times.java

public static String encodeDateTime(DateTime dateTime, String dateFormat) {
    if (Strings.isNullOrEmpty(dateFormat)) {
        return encodeDateTime(dateTime);
    } else if (dateTime == null) {
        return ZERO.toString(DateTimeFormat.forPattern(dateFormat));
    } else {/*from   w  w w. j a v a2s .  c  om*/
        return dateTime.toString(DateTimeFormat.forPattern(dateFormat)).replace(Z, UTC_OFFSET);
    }
}

From source file:com.google.cloud.tools.appengine.operations.cloudsdk.internal.args.Args.java

/**
 * Produces the flag form of a string value, separated with an equals character.
 *
 * @return {@code [--name=value]} or {@code []} if value is null.
 *///from w ww  .j  av a2 s . co  m
static List<String> stringWithEq(String name, @Nullable String value) {
    if (!Strings.isNullOrEmpty(value)) {
        return Collections.singletonList("--" + name + "=" + value);
    }
    return Collections.emptyList();
}

From source file:org.apache.kylin.metrics.property.QueryCubePropertyEnum.java

public static QueryCubePropertyEnum getByName(String name) {
    if (Strings.isNullOrEmpty(name)) {
        return null;
    }//from w  w w. j  a v a 2  s . c o m
    for (QueryCubePropertyEnum property : QueryCubePropertyEnum.values()) {
        if (property.propertyName.equals(name.toUpperCase())) {
            return property;
        }
    }

    return null;
}