Example usage for java.util Map size

List of usage examples for java.util Map size

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Introduction

In this page you can find the example usage for java.util Map size.

Prototype

int size();

Source Link

Document

Returns the number of key-value mappings in this map.

Usage

From source file:Main.java

public static String join(Map<?, ?> map, char separator, char valueStartChar, char valueEndChar) {

    if (map == null) {
        return null;
    }/*from   w w  w .  j  a v  a 2s.c om*/
    if (map.size() == 0) {
        return EMPTY;
    }
    StringBuilder buf = new StringBuilder(256);
    boolean isFirst = true;
    for (Entry<?, ?> entry : map.entrySet()) {
        if (isFirst) {
            buf.append(entry.getKey());
            buf.append(valueStartChar);
            buf.append(entry.getValue());
            buf.append(valueEndChar);
            isFirst = false;
        } else {
            buf.append(separator);
            buf.append(entry.getKey());
            buf.append(valueStartChar);
            buf.append(entry.getValue());
            buf.append(valueEndChar);
        }
    }

    return buf.toString();
}

From source file:Main.java

/**
 * Copies the entries from <code>source</code> to <code>dest1</code> until
 * <code>dest1</code> has reached size <code>dest1Capacity</code>. The
 * remaining entries are saved in <code>overflow</code>. The order of
 * insertion depends on the iterator of the underlying map. Note that as
 * <code>dest1</code> is a map, inserting an entry with a key that already
 * exists in the map does not increase its size (if the insertion is
 * permitted)./* w  w w.  ja  va2  s .  c  o m*/
 * 
 * @param <T>
 *            the key type.
 * @param <U>
 *            the entry/value type.
 * @param source
 *            the mappings to be copied.
 * @param dest1
 *            the first destination for the entries, to be filled until its
 *            size reaches dest1Capacity.
 * @param overflow
 *            destination for the remaining entries.
 * @param dest1Capacity
 *            maximum allowed size for dest1.
 */
public static <T, U> void copyUntilFull(final Map<? extends T, ? extends U> source,
        final Map<? super T, ? super U> dest1, Map<T, U> overflow, final int dest1Capacity) {
    for (final Map.Entry<? extends T, ? extends U> srcEntry : source.entrySet()) {
        if (dest1.size() < dest1Capacity) {
            dest1.put(srcEntry.getKey(), srcEntry.getValue());
        } else {
            overflow.put(srcEntry.getKey(), srcEntry.getValue());
        }
    }
}

From source file:Main.java

public static List<String> join(Map<String, String> map, String separator) {
    if (map == null) {
        return null;
    }/*w  w w. j  a v a 2  s  .  c om*/
    List<String> list = new ArrayList<String>();
    if (map == null || map.size() == 0) {
        return list;
    }
    for (Map.Entry<String, String> entry : map.entrySet()) {
        String key = entry.getKey();
        String value = entry.getValue();
        if (value == null || value.length() == 0) {
            list.add(key);
        } else {
            list.add(key + separator + value);
        }
    }
    return list;
}

From source file:com.alibaba.dragoon.patrol.kv.PassiveSender.java

/**
 * ?????// ww  w .ja  v a 2  s  .co  m
 * 
 * @param kvMap
 */
private static boolean hasExceedDataSize(Map<String, Object> data) {
    if (data.size() > ALLOW_DATA_SIZE_MAX) {
        return true;
    }
    return false;
}

From source file:Main.java

public static List<String> join(final Map<String, String> map, final String separator) {
    if (map == null) {
        return null;
    }/*w w  w .  j  a  va2 s.co  m*/
    final List<String> list = new ArrayList<String>();
    if (map == null || map.size() == 0) {
        return list;
    }
    for (final Map.Entry<String, String> entry : map.entrySet()) {
        final String key = entry.getKey();
        final String value = entry.getValue();
        if (value == null || value.length() == 0) {
            list.add(key);
        } else {
            list.add(key + separator + value);
        }
    }
    return list;
}

From source file:com.espertech.esper.epl.join.assemble.AssemblyStrategyTreeBuilder.java

/**
 * Builds a tree of {@link BaseAssemblyNode} from join strategy information.
 * @param rootStream - the root stream supplying the event to evaluate
 * @param streamsJoinedPerStream - a map in which the key is the stream number to supply an event,
 * and the value is an array of streams to find events in for the given event
 * @param isRequiredPerStream - indicates which streams are required join streams versus optional streams
 * @return root assembly node//from  w w  w .  j a  v a2 s.  c  o  m
 */
public static BaseAssemblyNode build(int rootStream, Map<Integer, int[]> streamsJoinedPerStream,
        boolean isRequiredPerStream[]) {
    if (streamsJoinedPerStream.size() < 3) {
        throw new IllegalArgumentException("Not a 3-way join");
    }
    if ((rootStream < 0) || (rootStream >= streamsJoinedPerStream.size())) {
        throw new IllegalArgumentException("Invalid root stream");
    }
    if (isRequiredPerStream.length != streamsJoinedPerStream.size()) {
        throw new IllegalArgumentException("Arrays not matching up");
    }

    NStreamOuterQueryPlanBuilder.verifyJoinedPerStream(rootStream, streamsJoinedPerStream);

    if (log.isDebugEnabled()) {
        log.debug(".build Building node for root stream " + rootStream + " streamsJoinedPerStream="
                + NStreamOuterQueryPlanBuilder.print(streamsJoinedPerStream) + " isRequiredPerStream="
                + Arrays.toString(isRequiredPerStream));
    }

    BaseAssemblyNode topNode = createNode(true, rootStream, streamsJoinedPerStream.size(),
            streamsJoinedPerStream.get(rootStream), isRequiredPerStream);

    recursiveBuild(rootStream, topNode, streamsJoinedPerStream, isRequiredPerStream);

    if (log.isDebugEnabled()) {
        StringWriter buf = new StringWriter();
        PrintWriter print = new PrintWriter(buf);
        IndentWriter indentWriter = new IndentWriter(print, 0, 2);
        topNode.printDescendends(indentWriter);

        log.debug(".build Dumping root node for stream " + rootStream + ": \n" + buf.toString());
    }

    return topNode;
}

From source file:net.metanotion.web.html.Tag.java

public static Iterator<Object> writeTag(String tagName, Map<String, Object> attributes, boolean selfClose) {
    final ArrayList<Object> t = new ArrayList<>((attributes.size() * 5) + 2);
    t.add("<" + tagName);
    for (final Map.Entry<String, Object> e : attributes.entrySet()) {
        t.add(" ");
        t.add(e.getKey());/*  w w w .j  a va  2  s . com*/
        final Object val = e.getValue();
        if (val != null) {
            t.add("=\"");
            t.add(StringEscapeUtils.escapeHtml4(val.toString()));
            t.add("\"");
        }
    }
    t.add(selfClose ? "/>" : ">");
    return t.iterator();
}

From source file:org.ambraproject.wombat.controller.ArticleAssetController.java

/**
 * Handle a file request where the supplied file type could not be matched to any files for an existing item. If
 * possible, resolve to another file to serve instead. Else, throw an appropriate exception.
 */// w  w w . ja  v a  2  s  . co  m
private static Map<String, ?> handleUnmatchedFileType(RequestedDoiVersion id, String itemType, String fileType,
        Map<String, ?> files) {
    if (files.size() == 1 && ITEM_TYPES_TO_TOLERATE.containsEntry(itemType, fileType)) {
        Map.Entry<String, ?> onlyEntry = Iterables.getOnlyElement(files.entrySet());
        log.warn(String.format("On %s (%s), received request for %s; only available file is %s", id, itemType,
                fileType, onlyEntry.getKey()));
        return (Map<String, ?>) onlyEntry.getValue();
    }
    String message = String.format("Unrecognized file type (\"%s\") for id: %s", fileType, id);
    throw new NotFoundException(message);
}

From source file:Main.java

/**
 * join the string tuple with the separator char sequence.
 * if the value of map is null ,just store the key.
 * @param map/*w ww  .ja  v  a  2  s .  c  o m*/
 *           the key,value tuple.
 * @param separator
 *          the join string
 * @return
 *         the joined string list.
 */
public static List<String> join(Map<String, String> map, String separator) {
    if (map == null) {
        return null;
    }
    List<String> result = new ArrayList<String>();
    if (map == null || map.size() == 0) {
        return result;
    }
    for (Map.Entry<String, String> entry : map.entrySet()) {
        String key = entry.getKey();
        String value = entry.getValue();
        if (value == null || value.length() == 0) {
            result.add(key);
        } else {
            result.add(key + separator + value);
        }
    }
    return result;
}

From source file:com.oplay.nohelper.volley.toolbox.JsonRequest.java

public static String getParamsString(Map<String, String> params) {
    try {/*from w  w w .j a va  2 s  .c  om*/
        if (params == null || params.size() == 0) {
            return "";
        }
        final Iterator<String> keySet = params.keySet().iterator();
        final StringBuilder sb = new StringBuilder();
        while (keySet.hasNext()) {
            final String key = keySet.next();
            final String val = params.get(key);
            if (val != null) {
                sb.append(key).append("=").append(URLEncoder.encode(val, HTTP.UTF_8));
                if (keySet.hasNext()) {
                    sb.append("&");
                }
            }
        }
        return sb.toString();
    } catch (Throwable e) {
    }
    return "";
}