Package org.linkki.util

Class BeanUtils

java.lang.Object

org.linkki.util.BeanUtils

public class BeanUtils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final String	GET_PREFIX
static final String	IS_PREFIX
static final String	SET_PREFIX

Method Summary

Modifier and Type	Method	Description
static BeanInfo	getBeanInfo(Class<?> clazz)	Returns the bean info for the given class.
static Field	getDeclaredField(Class<?> clazz, String name)	Returns the class' declared field with the given name.
static Field	getField(Class<?> clazz, String name)	Returns the class' field with the given name.
static Method	getMethod(Class<?> clazz, String name, Class<?>... parameterTypes)	Returns the method with the given name and parameter types.
static Optional<Method>	getMethod(Class<?> clazz, Predicate<Method> predicate)	Returns an optional containing the class' method matching the given predicate (empty optional if none matches).
static Stream<Method>	getMethods(Class<?> clazz, Predicate<Method> predicate)	Returns the class' methods matching the given predicate.
static String	getPropertyName(Method method)	Returns the property name from the given method: String getFoo() -> "foo" boolean isBar() -> "bar" void fooBar() -> "fooBar"
static String	getPropertyName(Type returnType, String methodName)	Returns the property name from the given method name: getFoo -> "foo" isBar -> "bar" fooBar -> "fooBar"
static Object	getValueFromField(Object object, Field field)	Returns the object's value for the field with the given name.
static Object	getValueFromField(Object object, String name)	Returns the object's value for the field with the given name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

GET_PREFIX

public static final String GET_PREFIX

See Also:

• Constant Field Values

SET_PREFIX

public static final String SET_PREFIX

See Also:

• Constant Field Values

IS_PREFIX

public static final String IS_PREFIX

See Also:

• Constant Field Values

Method Details

getBeanInfo

public static BeanInfo getBeanInfo(Class<?> clazz)

Returns the bean info for the given class.

getMethod

public static Method getMethod(Class<?> clazz,
 String name,
 Class<?>... parameterTypes)

Returns the method with the given name and parameter types.

See Also:

• Class.getMethod(String, Class...)

getMethod

public static Optional<Method> getMethod(Class<?> clazz,
 Predicate<Method> predicate)

Returns an optional containing the class' method matching the given predicate (empty optional if none matches). If you expect more than one match, getMethods(Class, Predicate) might be what you're looking for.

Throws:

IllegalStateException - If more than one method matches the predicate.

getMethods

public static Stream<Method> getMethods(Class<?> clazz,
 Predicate<Method> predicate)

Returns the class' methods matching the given predicate.

getDeclaredField

public static Field getDeclaredField(Class<?> clazz,
 String name)

Returns the class' declared field with the given name. Declared field means that the field is declared in the given class, any super classes are not searched.

See Also:

• Class.getDeclaredField(String)

getField

public static Field getField(Class<?> clazz,
 String name)

Returns the class' field with the given name. In contrast to getDeclaredField(Class, String) this method searches the type's hierarchy (if the class extends a super class)

Throws:

RuntimeException - wrapping a NoSuchFieldException if no such field exists.

See Also:

• Class.getDeclaredField(String)

getValueFromField

@CheckForNull
public static Object getValueFromField(Object object,
 String name)

Returns the object's value for the field with the given name.

See Also:

• Class.getDeclaredField(String)

getValueFromField

@CheckForNull
public static Object getValueFromField(Object object,
 Field field)

Returns the object's value for the field with the given name.

See Also:

• Class.getDeclaredField(String)

getPropertyName

public static String getPropertyName(Method method)

Returns the property name from the given method:

• String getFoo() -> "foo"
• boolean isBar() -> "bar"
• void fooBar() -> "fooBar"

getPropertyName

public static String getPropertyName(Type returnType,
 String methodName)

Returns the property name from the given method name:

• getFoo -> "foo"
• isBar -> "bar"
• fooBar -> "fooBar"