Example usage for java.lang.reflect Method getReturnType

Introduction

In this page you can find the example usage for java.lang.reflect Method getReturnType.

Prototype

public Class<?> getReturnType() 

Source Link

Document

Returns a Class object that represents the formal return type of the method represented by this Method object.

Usage

From source file:com.stehno.sjdbcx.reflection.extractor.RowMapperExtractor.java

public RowMapper extract(final Method method) {
    final com.stehno.sjdbcx.annotation.RowMapper mapper = AnnotationUtils.getAnnotation(method,
            com.stehno.sjdbcx.annotation.RowMapper.class);
    if (mapper == null) {
        Class mappedType = method.getReturnType();

        if (Collection.class.isAssignableFrom(mappedType)) {
            mappedType = (Class) ((ParameterizedType) method.getGenericReturnType())
                    .getActualTypeArguments()[0];

        } else if (mappedType.isArray()) {
            throw new UnsupportedOperationException("Auto-mapping for array return types is not yet supported");

        } else if (mappedType.isPrimitive()) {
            if (mappedType == int.class || mappedType == long.class) {
                return new SingleColumnRowMapper();

            } else if (mappedType == boolean.class) {
                return new RowMapper<Boolean>() {
                    @Override//from  w w w  .  j  a  v a2 s  .  c o  m
                    public Boolean mapRow(final ResultSet resultSet, final int i) throws SQLException {
                        return resultSet.getBoolean(1);
                    }
                };
            }
        }

        return new BeanPropertyRowMapper(mappedType);

    } else {
        final String extractKey = mapper.value();
        if (StringUtils.isEmpty(extractKey)) {
            return resolve((Class<RowMapper>) mapper.type());
        } else {
            return resolve(extractKey);
        }
    }
}

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From source file:eu.codesketch.scriba.rest.analyser.domain.service.introspector.jackson.JsonPropertyAnnotationIntrospector.java

private Property extractProperty(Descriptor descriptor) {
    JsonProperty jsonProperty = descriptor.getWrappedAnnotationAs(JsonProperty.class);
    String propertyName = jsonProperty.value();
    Class<?> parameterType;
    Field field = descriptor.annotatedElementAs(Field.class);
    if (null != field) {
        parameterType = field.getType();
        propertyName = "".equals(propertyName) ? field.getName() : propertyName;
    } else {//from   w  w  w .  ja v a 2 s .  c  o m
        Method method = descriptor.annotatedElementAs(Method.class);
        if (isSetter(method)) {
            parameterType = method.getParameterTypes()[0];
        } else {
            parameterType = method.getReturnType();
        }
        propertyName = "".equals(propertyName) ? getPropertyNamefromSetterOrGetter(method.getName())
                : propertyName;
    }
    LOGGER.debug("JsonProperty annotation has defined property name {}", propertyName);
    if (!isPrimitiveOrWrapper(parameterType)) {
        Property property = new Property(null, propertyName);
        for (Descriptor innerDescriptor : getDescriptorsForAnnotation(parameterType, JsonProperty.class)) {
            property.addProperty(extractProperty(innerDescriptor));
        }
        return property;
    } else {
        return new Property(parameterType.getName(), propertyName);
    }
}

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From source file:org.jsonschema2pojo.integration.ArrayIT.java

@Test
public void uniqueArraysAreSets() throws NoSuchMethodException {

    Method getterMethod = classWithArrayProperties.getMethod("getUniqueArray");

    assertThat(getterMethod.getReturnType().getName(), is(Set.class.getName()));
    assertThat(getterMethod.getGenericReturnType(), is(instanceOf(ParameterizedType.class)));

    Type genericType = ((ParameterizedType) getterMethod.getGenericReturnType()).getActualTypeArguments()[0];
    assertThat(genericType, is(instanceOf(Class.class)));
    assertThat(((Class<?>) genericType).getName(), is(Boolean.class.getName()));

}

---

From source file:org.jsonschema2pojo.integration.ArrayIT.java

@Test
public void nonUniqueArraysAreLists() throws NoSuchMethodException {

    Method getterMethod = classWithArrayProperties.getMethod("getNonUniqueArray");

    assertThat(getterMethod.getReturnType().getName(), is(List.class.getName()));
    assertThat(getterMethod.getGenericReturnType(), is(instanceOf(ParameterizedType.class)));

    Type genericType = ((ParameterizedType) getterMethod.getGenericReturnType()).getActualTypeArguments()[0];
    assertThat(genericType, is(instanceOf(Class.class)));
    assertThat(((Class<?>) genericType).getName(), is(Integer.class.getName()));

}

---

From source file:cz.zcu.kiv.eegdatabase.data.dao.SimpleGenericDao.java

/**
 * Gets all records with all of their properties set.
 * The method enforces eager loading of all properties that have their getter methods.
 * @return List of records with eagerly loaded properties.
 *//*from  w  ww . ja  va2s  .com*/
public List<T> getAllRecordsFull() {
    List<T> records = getAllRecords();
    for (T record : records) {
        Method[] methods = record.getClass().getDeclaredMethods();
        for (Method method : methods) {
            if (method.getName().startsWith("get") && !method.getReturnType().isPrimitive()) {
                try {
                    initializeProperty(method.invoke(record));
                } catch (IllegalAccessException e) {
                    log.error(e);
                } catch (InvocationTargetException e) {
                    log.error(e);
                } catch (Exception e) {
                    log.error(e);
                }
            }
        }
    }
    return records;
}

---

From source file:org.jsonschema2pojo.integration.ArrayIT.java

@Test
public void arraysAreNonUniqueByDefault() throws NoSuchMethodException {

    Method getterMethod = classWithArrayProperties.getMethod("getNonUniqueArrayByDefault");

    assertThat(getterMethod.getReturnType().getName(), is(List.class.getName()));

}

---

From source file:com.manydesigns.portofino.modules.ModuleRegistry.java

public void migrateAndInit(ServletContext servletContext) {
    for (Module module : modules) {
        int migrationVersion = module.getMigrationVersion();
        String key = "module." + module.getId() + ".migration.version";
        int installedVersion = configuration.getInt(key, -1);

        boolean migrationOk = true;
        Injections.inject(module, servletContext, null);

        if (installedVersion == -1)
            try { //Install
                logger.info("Installing module " + printModule(module) + "...");
                installedVersion = module.install();
                configuration.setProperty(key, installedVersion);
                configuration.save();/*from w  w w . j  a  va2  s.  c o  m*/
                logger.info("Installed module " + printModule(module));
            } catch (Throwable e) {
                logger.error("Could not install module " + printModule(module), e);
                migrationOk = false;
            }

        try { //Migrate
            while (installedVersion < migrationVersion) {
                logger.info("Migrating module " + printModule(module) + " from version " + installedVersion
                        + "...");
                Method method = module.getClass().getMethod("migrateFrom" + installedVersion);
                if (!Integer.TYPE.equals(method.getReturnType())) {
                    throw new RuntimeException("Migration method " + method + " does not return int");
                }
                Integer result = (Integer) method.invoke(module);
                if (result > installedVersion) {
                    installedVersion = result;
                    configuration.setProperty(key, result);
                    configuration.save();
                    logger.info("Migrated module " + printModule(module));
                } else {
                    throw new RuntimeException("Migration returned version " + result
                            + " while the installed one is " + installedVersion);
                }
            }
        } catch (Throwable e) {
            logger.error(
                    "Could not migrate module " + printModule(module) + " from version " + installedVersion, e);
            migrationOk = false;
        }

        if (migrationOk) { //Init (skip if installation or migration failed)
            try {
                logger.debug("Initializing module " + printModule(module) + "...");
                module.init();
                logger.info("Initialized module " + printModule(module));
            } catch (Throwable e) {
                logger.error("Could not initialize module " + printModule(module), e);
            }
        }
    }
}

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From source file:com.github.mybatis.spring.MapperFactoryBean.java

protected Object findDefault(Method method) {
    Class<?> clz = method.getReturnType();
    if (clz == String.class) {
        return "";
    } else if (clz == Long.class || clz == Double.class) {
        return 0L;
    } else if (clz == Boolean.class) {
        return Boolean.FALSE;
    } else if (clz.isArray()) {
        return new byte[0];
    } else if (clz.isAssignableFrom(Set.class)) {
        return ImmutableSet.of();
    } else if (clz.isAssignableFrom(List.class)) {
        return ImmutableList.of();
    } else if (clz.isAssignableFrom(Map.class)) {
        return ImmutableMap.of();
    } else {//from w w  w  .  ja va2 s  .  c  om
        return null;
    }
}

---

From source file:org.traccar.web.CsvBuilder.java

public void addLine(Object object) {

    SortedSet<Method> methods = getSortedMethods(object);

    for (Method method : methods) {
        if (method.getName().startsWith("get") && method.getParameterTypes().length == 0) {
            try {
                if (method.getReturnType().equals(boolean.class)) {
                    builder.append((Boolean) method.invoke(object));
                    addSeparator();//from   w  w  w.  j a  v a2s .c  o m
                } else if (method.getReturnType().equals(int.class)) {
                    builder.append((Integer) method.invoke(object));
                    addSeparator();
                } else if (method.getReturnType().equals(long.class)) {
                    builder.append((Long) method.invoke(object));
                    addSeparator();
                } else if (method.getReturnType().equals(double.class)) {
                    builder.append((Double) method.invoke(object));
                    addSeparator();
                } else if (method.getReturnType().equals(String.class)) {
                    builder.append((String) method.invoke(object));
                    addSeparator();
                } else if (method.getReturnType().equals(Date.class)) {
                    Date value = (Date) method.invoke(object);
                    builder.append(DATE_FORMAT.print(new DateTime(value)));
                    addSeparator();
                } else if (method.getReturnType().equals(Map.class)) {
                    Map value = (Map) method.invoke(object);
                    if (value != null) {
                        try {
                            String map = Context.getObjectMapper().writeValueAsString(value);
                            map = map.replaceAll("[\\{\\}\"]", "");
                            map = map.replaceAll(",", " ");
                            builder.append(map);
                            addSeparator();
                        } catch (JsonProcessingException e) {
                            Log.warning(e);
                        }
                    }
                }
            } catch (IllegalAccessException | InvocationTargetException error) {
                Log.warning(error);
            }
        }
    }
    addLineEnding();
}

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From source file:com.weibo.api.motan.proxy.RefererInvocationHandler.java

private Class<?> getRealReturnType(boolean asyncCall, Class<?> clazz, Method method, String methodName) {
    if (asyncCall) {
        try {/*  www.  j  a v  a 2  s.  c o m*/
            Method m = clazz.getMethod(methodName, method.getParameterTypes());
            return m.getReturnType();
        } catch (Exception e) {
            LoggerUtil.warn("RefererInvocationHandler get real return type fail. err:" + e.getMessage());
            return method.getReturnType();
        }
    } else {
        return method.getReturnType();
    }
}

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