Examples of org.apache.commons.lang3.text.StrBuilder

org.apache.commons.lang3.text.StrBuilder
Builds a string from constituent parts providing a more flexible and powerful API than StringBuffer.
The main differences from StringBuffer/StringBuilder are:
- Not synchronized
- Not final
- Subclasses have direct access to character array
- Additional methods
  - appendWithSeparators - adds an array of values, with a separator
  - appendPadding - adds a length padding characters
  - appendFixedLength - adds a fixed width field to the builder
  - toCharArray/getChars - simpler ways to get a range of the character array
  - delete - delete char or string
  - replace - search and replace for a char or string
  - leftString/rightString/midString - substring without exceptions
  - contains - whether the builder contains a char or string
  - size/clear/isEmpty - collections style API methods
Views
- asTokenizer - uses the internal buffer as the source of a StrTokenizer
- asReader - uses the internal buffer as the source of a Reader
- asWriter - allows a Writer to write directly to the internal buffer

The aim has been to provide an API that mimics very closely what StringBuffer provides, but with additional methods. It should be noted that some edge cases, with invalid indices or null input, have been altered - see individual methods. The biggest of these changes is that by default, null will not output the text 'null'. This can be controlled by a property, {@link #setNullText(String)}.

Prior to 3.0, this class implemented Cloneable but did not implement the clone method so could not be used. From 3.0 onwards it no longer implements the interface. @since 2.2 @version $Id: StrBuilder.java 1153484 2011-08-03 13:39:42Z ggregory $


    @Before
    public void setUp() {
        StaticContainer.reset();
        publicChild = new PublicChild();
        publiclyShadowedChild = new PubliclyShadowedChild();
        privatelyShadowedChild = new PrivatelyShadowedChild();
    }

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    @Before
    public void setUp() {
        StaticContainer.reset();
        publicChild = new PublicChild();
        publiclyShadowedChild = new PubliclyShadowedChild();
        privatelyShadowedChild = new PrivatelyShadowedChild();
    }

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        assertTrue(StringUtils.startsWithAny("abcxyz", "abc"));
        assertTrue(StringUtils.startsWithAny("abcxyz", null, "xyz", "abc"));
        assertFalse(StringUtils.startsWithAny("abcxyz", null, "xyz", "abcd"));


        assertTrue("StringUtils.startsWithAny(abcxyz, StringBuilder(xyz), StringBuffer(abc))", StringUtils.startsWithAny("abcxyz", new StringBuilder("xyz"), new StringBuffer("abc")));
        assertTrue("StringUtils.startsWithAny( StrBuilder(abcxyz), StringBuilder(xyz), StringBuffer(abc))", StringUtils.startsWithAny( new StrBuilder("abcxyz"), new StringBuilder("xyz"), new StringBuffer("abc")));
    }

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        assertTrue("StringUtils.endsWithAny(abcxyz, new String[] {xyz})", StringUtils.endsWithAny("abcxyz", new String[] {"xyz"}));
        assertTrue("StringUtils.endsWithAny(abcxyz, new String[] {null, xyz, abc})", StringUtils.endsWithAny("abcxyz", new String[] {null, "xyz", "abc"}));
        assertFalse("StringUtils.endsWithAny(defg, new String[] {null, xyz, abc})", StringUtils.endsWithAny("defg", new String[] {null, "xyz", "abc"}));


        assertTrue("StringUtils.endsWithAny(abcxyz, StringBuilder(abc), StringBuffer(xyz))", StringUtils.endsWithAny("abcxyz", new StringBuilder("abc"), new StringBuffer("xyz")));
        assertTrue("StringUtils.endsWithAny( StrBuilder(abcxyz), StringBuilder(abc), StringBuffer(xyz))", StringUtils.endsWithAny( new StrBuilder("abcxyz"), new StringBuilder("abc"), new StringBuffer("xyz")));
    }

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    @Test
    public void testIdentityToStringStrBuilder() {
        final Integer i = Integer.valueOf(102);
        final String expected = "java.lang.Integer@" + Integer.toHexString(System.identityHashCode(i));


        final StrBuilder builder = new StrBuilder();
        ObjectUtils.identityToString(builder, i);
        assertEquals(expected, builder.toString());


        try {
            ObjectUtils.identityToString((StrBuilder)null, "tmp");
            fail("NullPointerException expected");
        } catch(final NullPointerException npe) {
        }
        
        try {
            ObjectUtils.identityToString(new StrBuilder(), null);
            fail("NullPointerException expected");
        } catch(final NullPointerException npe) {
        }
    }

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     * @param l The list of columns.
     * @return A comma separated string of the query strings of the given columns.
     */
    /* package */
    static String columnListToQueryString(List<AbstractColumn> l) {
        StrBuilder builder = new StrBuilder();
        List<String> stringList = Lists.newArrayList();
        for(AbstractColumn col : l) {
            stringList.add(col.toQueryString());
        }
        builder.appendWithSeparators(stringList, ", ");
        return builder.toString();
    }

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            clauses.add("FORMAT " + userFormatOptions.toQueryString());
        }
        if(hasOptions()) {
            clauses.add("OPTIONS " + options.toQueryString());
        }
        StrBuilder result = new StrBuilder();
        result.appendWithSeparators(clauses, " ");
        return result.toString();
    }

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     * The string returned does not contain the FORMAT keyword.
     *
     * @return The query string.
     */
    public String toQueryString() {
        StrBuilder builder = new StrBuilder();
        List<String> stringList = Lists.newArrayList();
        for(AbstractColumn col : columnPatterns.keySet()) {
            String pattern = columnPatterns.get(col);
            stringList.add(col.toQueryString() + " " + Query.stringToQueryStringLiteral(pattern));
        }
        builder.appendWithSeparators(stringList, ", ");
        return builder.toString();
    }

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     */
    private String createIdPivotPrefix() {
        if(!isPivot()) {
            return "";
        }
        return new StrBuilder().appendWithSeparators(values, PIVOT_COLUMNS_SEPARATOR)
                .append(PIVOT_AGGREGATION_SEPARATOR).toString();
    }

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     */
    private String createLabelPivotPart() {
        if(!isPivot()) {
            return "";
        }
        return new StrBuilder().appendWithSeparators(values, PIVOT_COLUMNS_SEPARATOR).toString();
    }

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