Example usage for org.apache.commons.lang3 ClassUtils getClass

Introduction

In this page you can find the example usage for org.apache.commons.lang3 ClassUtils getClass.

Prototype

public static Class<?> getClass(final String className, final boolean initialize)
        throws ClassNotFoundException 

Source Link

Document

Returns the class represented by className using the current thread's context class loader.

Usage

From source file:org.lenskit.eval.traintest.metrics.MetricLoaderHelper.java

/**
 * Look up the class implementing a metric by name.
 * @param name The metric name./*from  w  ww.  j a va2 s .co m*/
 * @return The metric class.
 */
@Nullable
public Class<?> findClass(String name) {
    if (propFiles.containsKey(name.toLowerCase())) {
        String className = (String) propFiles.get(name.toLowerCase());
        logger.debug("resolving metric {} to class {}", name, className);
        try {
            return ClassUtils.getClass(loader, className);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException("class " + className + " not found", e);
        }
    } else {
        try {
            logger.debug("trying to look up metric {} as class", name);
            return ClassUtils.getClass(loader, name);
        } catch (ClassNotFoundException e) {
            logger.debug("no metric {} found");
            return null;
        }
    }
}

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From source file:org.springframework.jdbc.core.JdbcOperationsUtils.java

public static final RowMapper<Pair<String, Serializable>> getMappedPropertyValueMapper(final String propNameCol,
        final String propTypeCol, final String propValCol, final ClassLoader loader,
        final ConversionService converter) {
    return new RowMapper<Pair<String, Serializable>>() {
        @Override//ww w  .j a v a 2  s .  co m
        public Pair<String, Serializable> mapRow(ResultSet rs, int rowNum) throws SQLException {
            String propName = rs.getString(propNameCol);
            String propType = rs.getString(propTypeCol);
            final Class<?> targetType;
            try {
                targetType = ClassUtils.getClass(loader, propType);
            } catch (ClassNotFoundException e) {
                throw new SQLException(
                        "mapRow(" + propName + ")@" + rowNum + ": unknown property type: " + propType);
            }

            if (!Serializable.class.isAssignableFrom(targetType)) {
                throw new SQLException(
                        "mapRow(" + propName + ")@" + rowNum + ": not serializable: " + propType);
            }

            if (!converter.canConvert(String.class, targetType)) {
                throw new SQLException(
                        "mapRow(" + propName + ")@" + rowNum + ": cannot convert from " + propType);
            }

            String propValue = rs.getString(propValCol);
            Serializable convertedValue = (Serializable) converter.convert(propValue, targetType);
            return Pair.of(propName, convertedValue);
        }
    };
}

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