Example usage for org.apache.commons.lang StringUtils reverse

Introduction

In this page you can find the example usage for org.apache.commons.lang StringUtils reverse.

Prototype

public static String reverse(String str) 

Source Link

Document

Reverses a String as per StrBuilder#reverse() .

Usage

From source file:org.apache.accumulo.examples.wikisearch.ingest.WikipediaPartitionedMapper.java

@Override
protected void map(Text language, Article article, Context context) throws IOException, InterruptedException {
    String NULL_BYTE = "\u0000";
    String colfPrefix = language.toString() + NULL_BYTE;
    String indexPrefix = "fi" + NULL_BYTE;
    ColumnVisibility cv = new ColumnVisibility(cvPrefix + language);

    if (article != null) {
        Text partitionId = new Text(Integer.toString(WikipediaMapper.getPartitionId(article, numPartitions)));

        // Create the mutations for the document.
        // Row is partition id, colf is language0articleid, colq is fieldName\0fieldValue
        Mutation m = new Mutation(partitionId);
        for (Entry<String, Object> entry : article.getFieldValues().entrySet()) {
            m.put(colfPrefix + article.getId(), entry.getKey() + NULL_BYTE + entry.getValue().toString(), cv,
                    article.getTimestamp(), NULL_VALUE);
            // Create mutations for the metadata table.
            MutationInfo mm = new MutationInfo(entry.getKey(), METADATA_EVENT_COLUMN_FAMILY,
                    language.toString(), cv, article.getTimestamp());
            wikiMetadataOutput.put(mm, NULL_VALUE);
        }/* ww w.  j a  v  a2  s.com*/

        // Tokenize the content
        Set<String> tokens = WikipediaMapper.getTokens(article);

        // We are going to put the fields to be indexed into a multimap. This allows us to iterate
        // over the entire set once.
        Multimap<String, String> indexFields = HashMultimap.create();
        // Add the normalized field values
        LcNoDiacriticsNormalizer normalizer = new LcNoDiacriticsNormalizer();
        for (Entry<String, String> index : article.getNormalizedFieldValues().entrySet())
            indexFields.put(index.getKey(), index.getValue());
        // Add the tokens
        for (String token : tokens)
            indexFields.put(TOKENS_FIELD_NAME, normalizer.normalizeFieldValue("", token));

        for (Entry<String, String> index : indexFields.entries()) {
            // Create mutations for the in partition index
            // Row is partition id, colf is 'fi'\0fieldName, colq is fieldValue\0language\0article id
            m.put(indexPrefix + index.getKey(), index.getValue() + NULL_BYTE + colfPrefix + article.getId(), cv,
                    article.getTimestamp(), NULL_VALUE);

            // Create mutations for the global index
            // Row is field value, colf is field name, colq is partitionid\0language, value is Uid.List object
            MutationInfo gm = new MutationInfo(index.getValue(), index.getKey(),
                    partitionId + NULL_BYTE + language, cv, article.getTimestamp());
            wikiIndexOutput.put(gm, new CountAndSet(Integer.toString(article.getId())));

            // Create mutations for the global reverse index
            MutationInfo grm = new MutationInfo(StringUtils.reverse(index.getValue()), index.getKey(),
                    partitionId + NULL_BYTE + language, cv, article.getTimestamp());
            wikiReverseIndexOutput.put(grm, new CountAndSet(Integer.toString(article.getId())));

            // Create mutations for the metadata table.
            MutationInfo mm = new MutationInfo(index.getKey(), METADATA_INDEX_COLUMN_FAMILY,
                    language + NULL_BYTE + LcNoDiacriticsNormalizer.class.getName(), cv,
                    article.getTimestamp());
            wikiMetadataOutput.put(mm, NULL_VALUE);
        }
        // Add the entire text to the document section of the table.
        // row is the partition, colf is 'd', colq is language\0articleid, value is Base64 encoded GZIP'd document
        m.put(DOCUMENT_COLUMN_FAMILY, colfPrefix + article.getId(), cv, article.getTimestamp(),
                new Value(Base64.encodeBase64(article.getText().getBytes())));
        context.write(tablename, m);

    } else {
        context.getCounter("wikipedia", "invalid articles").increment(1);
    }
    context.progress();
}

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From source file:org.apache.hadoop.hive.ql.exec.Utilities.java

/**
 * convert "From src insert blah blah" to "From src insert ... blah"
 *//* w  ww. java2  s.  c  o m*/
public static String abbreviate(String str, int max) {
    str = str.trim();

    int len = str.length();
    int suffixlength = 20;

    if (len <= max) {
        return str;
    }

    suffixlength = Math.min(suffixlength, (max - 3) / 2);
    String rev = StringUtils.reverse(str);

    // get the last few words
    String suffix = WordUtils.abbreviate(rev, 0, suffixlength, "");
    suffix = StringUtils.reverse(suffix);

    // first few ..
    String prefix = StringUtils.abbreviate(str, max - suffix.length());

    return prefix + suffix;
}

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From source file:org.apache.kylin.cube.cuboid.Cuboid.java

public static String getDisplayName(long cuboidID, int dimensionCount) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < dimensionCount; ++i) {
        if ((cuboidID & (1L << i)) == 0) {
            sb.append('0');
        } else {//from w  w w .j a va2 s . c  om
            sb.append('1');
        }
    }
    return StringUtils.reverse(sb.toString());
}

---

From source file:org.apache.rya.indexing.accumulo.freetext.AccumuloFreeTextIndexer.java

private Set<String> unrollWildcard(final String string, final boolean reverse) throws IOException {
    final Scanner termTableScan = getScanner(getFreeTextTermTablename(conf));

    final Set<String> unrolledTerms = new HashSet<String>();

    Text queryTerm;/*from  w ww  .  j  a v  a  2 s . co  m*/
    if (reverse) {
        final String t = StringUtils.removeStart(string, "*").toLowerCase();
        queryTerm = ColumnPrefixes.getRevTermListColFam(t);
    } else {
        final String t = StringUtils.removeEnd(string, "*").toLowerCase();
        queryTerm = ColumnPrefixes.getTermListColFam(t);
    }

    // perform query and read results
    termTableScan.setRange(Range.prefix(queryTerm));

    for (final Entry<Key, Value> e : termTableScan) {
        final String term = ColumnPrefixes.removePrefix(e.getKey().getRow()).toString();
        if (reverse) {
            unrolledTerms.add(StringUtils.reverse(term));
        } else {
            unrolledTerms.add(term);
        }
    }

    if (unrolledTerms.isEmpty()) {
        // put in a placeholder term that will never be in the index.
        unrolledTerms.add("\1\1\1");
    }

    return unrolledTerms;
}

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From source file:org.apache.solr.analytics.util.valuesource.ReverseStringFunction.java

protected CharSequence func(int doc, FunctionValues vals) throws IOException {
    String val = vals.strVal(doc);
    return val != null ? StringUtils.reverse(val) : null;
}

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From source file:org.apache.tapestry5.func.ZippedFlowTests.java

@Test
public void mapTuples() {
    Tuple<String, String> firstTuple = zipped
            .mapTuples(new Mapper<Tuple<Integer, String>, Tuple<String, String>>() {
                public Tuple<String, String> map(Tuple<Integer, String> value) {
                    return Tuple.create(StringUtils.reverse(value.second),
                            String.format("%d-%d", value.first, value.second.length()));
                }//from   w  ww  .  j a  v  a2  s  . c om

            }).first();

    assertEquals(firstTuple.first, "derf");
    assertEquals(firstTuple.second, "1-4");
}

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From source file:org.castafiore.utils.StringUtil.java

private static String sep(String s) {
    StringBuilder b = new StringBuilder();
    if (s.length() > 3) {
        int counter = 0;
        s = StringUtils.reverse(s);
        for (char c : s.toCharArray()) {
            b.append(c);/* www .ja  va  2s  .c  om*/
            counter++;
            if (counter == 3) {
                b.append(' ');
                counter = 0;
            }
        }

        return StringUtils.reverse(b.toString().trim());
    } else {
        return s;
    }
}

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From source file:org.displaytag.decorator.AutolinkColumnDecorator.java

/**
 * @see org.displaytag.decorator.ColumnDecorator#decorate(java.lang.Object)
 *///from w w  w  . j  ava2 s  . c  om
public String decorate(Object columnValue) {
    if (columnValue == null) {
        return null;
    }
    String work = columnValue.toString();

    int urlBegin;
    StringBuffer buffer = new StringBuffer();

    // First check for email addresses.
    while ((urlBegin = work.indexOf('@')) != -1) {
        int start = 0;
        int end = work.length() - 1;

        // scan backwards...
        for (int j = urlBegin; j >= 0; j--) {
            if (Character.isWhitespace(work.charAt(j))) {
                start = j + 1;
                break;
            }
        }

        // scan forwards...
        for (int j = urlBegin; j <= end; j++) {
            if (Character.isWhitespace(work.charAt(j))) {
                end = j - 1;
                break;
            }
        }

        String email = work.substring(start, end + 1);

        buffer.append(work.substring(0, start)).append("<a href=\"mailto:") //$NON-NLS-1$
                .append(email + "\">") //$NON-NLS-1$
                .append(email).append("</a>"); //$NON-NLS-1$

        if (end == work.length()) {
            work = TagConstants.EMPTY_STRING;
        } else {
            work = work.substring(end + 1);
        }
    }

    work = buffer.toString() + work;
    buffer = new StringBuffer();

    // Now check for urls...
    while ((urlBegin = work.indexOf(URL_DELIM)) != -1) {

        // scan backwards...
        int fullUrlBegin = urlBegin;
        StringBuffer prefixBuffer = new StringBuffer(10);
        for (int j = fullUrlBegin - 1; j >= 0; j--) {
            if (Character.isWhitespace(work.charAt(j))) {
                fullUrlBegin = j + 1;
                break;
            }
            fullUrlBegin = j;
            prefixBuffer.append(work.charAt(j));
        }

        if (!ArrayUtils.contains(URLS_PREFIXES, StringUtils.reverse(prefixBuffer.toString()))) {

            buffer.append(work.substring(0, urlBegin + 3));
            work = work.substring(urlBegin + 3);
            continue;
        }

        int urlEnd = work.length();

        // scan forwards...
        for (int j = urlBegin; j < urlEnd; j++) {
            if (Character.isWhitespace(work.charAt(j))) {
                urlEnd = j;
                break;
            }
        }

        String url = work.substring(fullUrlBegin, urlEnd);

        buffer.append(work.substring(0, fullUrlBegin)).append("<a href=\"")//$NON-NLS-1$
                .append(url).append("\">")//$NON-NLS-1$
                .append(url).append("</a>"); //$NON-NLS-1$

        if (urlEnd >= work.length()) {
            work = TagConstants.EMPTY_STRING;
        } else {
            work = work.substring(urlEnd);
        }
    }

    buffer.append(work);
    return buffer.toString();
}

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From source file:org.failearly.dataz.template.encoder.support.EncodersTest.java

@Test
public void chain__should_apply_encoders_from_left_to_right() throws Exception {
    // arrange / given
    final Encoder<String, String> encoder = Encoders.chain(Encoders.stringToByteArray(), invertByteArray(),
            Encoders.byteArrayToString());

    // assert / then
    assertThat(encoder.encode(ANY_STRING), is(StringUtils.reverse(ANY_STRING)));
}

---

From source file:org.failearly.dataz.template.encoder.support.EncodersTest.java

private static Encoder invertByteArray() {
    return new EncoderBase<byte[], byte[]>() {
        @Override//  w  w  w.ja va2  s  .  c o m
        public byte[] encode(byte[] value) throws Exception {
            return StringUtils.reverse(new String(value)).getBytes();
        }
    };
}

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