Examples of org.geotools.util.InterpolationProperties

org.geotools.util.InterpolationProperties
Stores properties and provides methods to support interpolation of properties in a file.
Interpolation means the substitution of a string of the form ${some.property} with the value of the property called "some.property".
Interpolation is performed repeatedly, so can values can contain new interpolations. Infinite loops are supported. This is not a feature. @author Ben Caradoc-Davies (CSIRO Earth Science and Resource Engineering) @author Niels Charlier (Curtin University of Technology) @source $URL$

    public void testInterpolate() {
        Properties properties = new Properties();
        properties.put("foo.x", "123");
        properties.put("foo.y", "abc");
        properties.put("foo.z", "bar");
        InterpolationProperties props = new InterpolationProperties(properties);
        String result = props.interpolate(
                "123ajh${foo.z} akl ${foo.y}${foo.y} laskj ${foo.x}\n"
                        + "foo.x${foo.x}${foo.x} ${foo.z}${foo.y}");
        assertEquals("123ajhbar akl abcabc laskj 123\nfoo.x123123 barabc", result);
    }

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     */
    @Test
    public void testInterpolateNonexistent() {
        boolean interpolatedNonexistentProperty = false;
        try {
            InterpolationProperties props = new InterpolationProperties(new Properties());
            props.interpolate("123 ${does.not.exist} 456");
            interpolatedNonexistentProperty = true;
        } catch (Exception e) {
            // success
        }
        assertFalse(interpolatedNonexistentProperty);

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     * Test that {@link PropertyInterpolationUtils#loadProperties(String)} can load properties from
     * the classpath.
     */
    @Test
    public void testLoadPropertiesFromClasspath() {
        InterpolationProperties props = new InterpolationProperties(IDENTIFIER);
        assertEquals("found-on-classpath", props.getProperty(TEST_PROPERTY));
        checkSystemProperties(props);
    }

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     * Test that in {@link PropertyInterpolationUtils#loadProperties(String)} only system properties
     * are loaded when the properties files does not exist.
     */
    @Test
    public void testLoadPropertiesDoesNotExist() {
        InterpolationProperties props = new InterpolationProperties(IDENTIFIER+ ".does-not-exist");
        assertNull(props.getProperty(TEST_PROPERTY));
        checkSystemProperties(props);
    }

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     * the a file specified in a system property.
     */
    @Test
    public void testLoadPropertiesFromFile() {
        // note that the identifier does *not* match the filename
        InterpolationProperties props = new InterpolationProperties(TEST_FILE_SYSTEM_PROPERTY
                .replace(".properties", ""));
        assertEquals("found-in-file", props.getProperty(TEST_PROPERTY));
        checkSystemProperties(props);
    }

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     * 
     * @return properties
     */
    public synchronized InterpolationProperties getProperties() {
        if (properties == null) {
            properties = new InterpolationProperties(AppSchemaDataAccessFactory.DBTYPE_STRING);
        }
        return properties;
    }

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