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/*
* Licensed to the Nervousync Studio (NSYC) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.nervousync.utils;
import java.lang.reflect.*;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Collection;
import java.util.Date;
import java.util.Optional;
import jakarta.xml.bind.annotation.XmlRootElement;
import jakarta.xml.bind.annotation.XmlType;
import org.nervousync.beans.core.BeanObject;
import org.nervousync.commons.core.Globals;
import org.nervousync.enumerations.xml.DataType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The type Object utils.
*
* @author Steven Wee [email protected]
* @version $Revision : 1.0 $ $Date: Jan 13, 2010 4:26:58 PM $
*/
public final class ObjectUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(ObjectUtils.class);
private static final String ARRAY_START = "[";
private static final String ARRAY_END = "]";
private static final String ARRAY_ELEMENT_SEPARATOR = ", ";
private ObjectUtils() {
}
/**
* Create a proxy object instance
*
* @param T
* @param clazz define class
* @return object instance
*/
public static T newInstance(final Class clazz) {
return newInstance(clazz, new Object[0]);
}
/**
* Create a proxy object instance
*
* @param T
* @param clazz define class
* @return object instance
*/
public static T newInstance(final Class clazz, final Object[] paramValues) {
if (clazz == null) {
return null;
}
Constructor constructor;
try {
if (paramValues == null || paramValues.length == 0) {
constructor = ClassUtils.findConstructor(clazz);
if (!Modifier.isPublic(clazz.getModifiers()) || !ReflectionUtils.publicMember(constructor)) {
ReflectionUtils.makeAccessible(constructor);
}
return constructor.newInstance();
} else {
Class[] paramTypes = new Class[paramValues.length];
for (int i = 0; i < paramValues.length; i++) {
paramTypes[i] = paramValues[i].getClass();
}
constructor = ClassUtils.findConstructor(clazz, paramTypes);
if (!Modifier.isPublic(clazz.getModifiers()) || !ReflectionUtils.publicMember(constructor)) {
ReflectionUtils.makeAccessible(constructor);
}
return constructor.newInstance(paramValues);
}
} catch (SecurityException | NoSuchMethodException | InstantiationException
| IllegalAccessException | InvocationTargetException e) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Create proxy instance error! ", e);
}
}
return null;
}
/**
* Create a proxy object instance
*
* @param T
* @param clazz define class
* @param methodInterceptor method interceptor instance
* @return object instance
*/
public static T newInstance(final Class clazz, final InvocationHandler methodInterceptor) {
return newInstance(clazz, new Class[]{clazz}, methodInterceptor);
}
/**
* Create a proxy object instance
*
* @param T
* @param clazz define class
* @return object instance
*/
public static T newInstance(final Class clazz, final Class[] interfaceClasses,
final InvocationHandler methodInterceptor) {
return createProxyInstance(clazz, interfaceClasses, methodInterceptor);
}
/**
* Create a proxy object instance
*
* @param T
* @param clazz define class
* @param invocationHandler method invocation handler instance
* @return object instance
*/
private static T createProxyInstance(final Class clazz, final Class[] interfaceClasses,
final InvocationHandler invocationHandler) {
if (clazz == null || invocationHandler == null) {
return newInstance(clazz);
}
Class[] interfaces;
if (interfaceClasses == null || interfaceClasses.length == 0) {
interfaces = new Class[]{clazz};
} else {
interfaces = interfaceClasses;
}
return clazz.cast(Proxy.newProxyInstance(clazz.getClassLoader(), interfaces, invocationHandler));
}
/**
* Check whether the given exception is compatible with the exceptions
* declared in a throw clause.
*
* @param ex the exception to checked
* @param declaredExceptions the exceptions declared in the throw clause
* @return whether the given exception is compatible
*/
public static boolean isCompatibleWithThrowClause(final Throwable ex, final Class[] declaredExceptions) {
if (ex instanceof RuntimeException || ex instanceof Error) {
return Boolean.TRUE;
}
if (declaredExceptions != null) {
return Arrays.stream(declaredExceptions)
.anyMatch(declaredException -> ClassUtils.isAssignableValue(declaredException, ex));
}
return Boolean.FALSE;
}
/**
* Return whether the given array is empty: that is, null
* or of zero-length.
*
* @param array the array to check
* @return whether the given array is empty
*/
public static boolean isEmpty(final Object[] array) {
return (array == null || array.length == 0);
}
/**
* Return whether the given array is empty: that is, null
* or of zero-length.
*
* @param object the object to check
* @return whether the given array is empty
*/
public static boolean isNull(final Object object) {
if (object == null) {
return Boolean.TRUE;
}
if (object.getClass().isArray()) {
return (Array.getLength(object) == 0);
} else {
if (object instanceof String) {
return (((String) object).length() == 0);
}
}
return Boolean.FALSE;
}
/**
* Check whether the given array contains the given element.
*
* @param array the array to check (maybe null,
* in which case the return value will always be Boolean.FALSE)
* @param element the element to check for
* @return whether the element has been found in the given array
*/
public static boolean notContainsElement(final Collection array, final Object element) {
if (array == null) {
return Boolean.TRUE;
}
return Arrays.stream(toObjectArray(array)).noneMatch(object -> nullSafeEquals(object, element));
}
/**
* Append the given Object to the given array, returning a new array
* consisting of the input array contents plus the given Object.
*
* @param array the array to append to (can be null)
* @param obj the Object to append
* @return the new array (of the same component type; never null)
*/
public static Object[] addObjectToArray(final Object[] array, final Object obj) {
Class compType = Object.class;
if (array != null) {
compType = array.getClass().getComponentType();
} else if (obj != null) {
compType = obj.getClass();
}
int newArrLength = (array != null ? array.length + 1 : 1);
Object[] newArr = (Object[]) Array.newInstance(compType, newArrLength);
if (array != null) {
System.arraycopy(array, 0, newArr, 0, array.length);
}
newArr[newArr.length - 1] = obj;
return newArr;
}
/**
* Convert the given array (which may be a primitive array) to an
* object array (if necessary of primitive wrapper objects).
* A null source value will be converted to an
* empty Object array.
*
* @param source the (potentially primitive) array
* @return the corresponding object array (never null)
* @throws IllegalArgumentException if the parameter is not an array
*/
public static Object[] toObjectArray(final Object source) {
if (source instanceof Object[]) {
return (Object[]) source;
}
if (source == null) {
return new Object[0];
}
if (!source.getClass().isArray()) {
throw new IllegalArgumentException("Source is not an array: " + source);
}
int length = Array.getLength(source);
if (length == 0) {
return new Object[0];
}
Class wrapperType = Array.get(source, 0).getClass();
Object[] newArray = (Object[]) Array.newInstance(wrapperType, length);
for (int i = 0; i < length; i++) {
newArray[i] = Array.get(source, i);
}
return newArray;
}
/**
* Retrieve simple data type data type.
*
* @param clazz the clazz
* @return the data type
*/
public static DataType retrieveSimpleDataType(final Class clazz) {
if (clazz == null) {
return DataType.UNKNOWN;
}
if (clazz.equals(Character[].class) || clazz.equals(char[].class)) {
return DataType.CDATA;
} else if (clazz.equals(Byte[].class) || clazz.equals(byte[].class)) {
return DataType.BINARY;
} else if (clazz.equals(Boolean.class) || clazz.equals(boolean.class)) {
return DataType.BOOLEAN;
} else if (clazz.equals(Date.class)) {
return DataType.DATE;
} else if (clazz.equals(Integer.class) || clazz.equals(int.class)
|| clazz.equals(Float.class) || clazz.equals(float.class)
|| clazz.equals(Double.class) || clazz.equals(double.class)
|| clazz.equals(Short.class) || clazz.equals(short.class)
|| clazz.equals(Long.class) || clazz.equals(long.class)
|| clazz.equals(byte.class) || clazz.equals(BigInteger.class)
|| clazz.equals(BigDecimal.class) || clazz.equals(Number.class)) {
return DataType.NUMBER;
} else if (clazz.equals(String.class)) {
return DataType.STRING;
} else if (BeanObject.class.isAssignableFrom(clazz)
&& (clazz.isAnnotationPresent(XmlType.class) || clazz.isAnnotationPresent(XmlRootElement.class))) {
return DataType.OBJECT;
} else if (clazz.isEnum()) {
return DataType.ENUM;
} else {
return DataType.UNKNOWN;
}
}
//---------------------------------------------------------------------
// Convenience methods for content-based equality/hash-code handling
//---------------------------------------------------------------------
/**
* Determine if the given objects are equal, returning Boolean.TRUE
* if both are null or Boolean.FALSE if only one is
* null.
*
Compares arrays with Arrays.equals, performing an equality
* check based on the array elements rather than the array reference.
*
* @param o1 first Object to compare
* @param o2 second Object to compare
* @return whether the given objects are equal
* @see java.util.Arrays#equals java.util.Arrays#equals
*/
public static boolean nullSafeEquals(final Object o1, final Object o2) {
if (o1 == o2) {
return Boolean.TRUE;
}
if (o1 == null || o2 == null) {
return Boolean.FALSE;
}
if (o1.equals(o2)) {
return Boolean.TRUE;
}
if (o1.getClass().isArray() && o2.getClass().isArray()) {
if (o1 instanceof Object[] && o2 instanceof Object[]) {
return Arrays.equals((Object[]) o1, (Object[]) o2);
}
if (o1 instanceof boolean[] && o2 instanceof boolean[]) {
return Arrays.equals((boolean[]) o1, (boolean[]) o2);
}
if (o1 instanceof byte[] && o2 instanceof byte[]) {
return Arrays.equals((byte[]) o1, (byte[]) o2);
}
if (o1 instanceof char[] && o2 instanceof char[]) {
return Arrays.equals((char[]) o1, (char[]) o2);
}
if (o1 instanceof double[] && o2 instanceof double[]) {
return Arrays.equals((double[]) o1, (double[]) o2);
}
if (o1 instanceof float[] && o2 instanceof float[]) {
return Arrays.equals((float[]) o1, (float[]) o2);
}
if (o1 instanceof int[] && o2 instanceof int[]) {
return Arrays.equals((int[]) o1, (int[]) o2);
}
if (o1 instanceof long[] && o2 instanceof long[]) {
return Arrays.equals((long[]) o1, (long[]) o2);
}
if (o1 instanceof short[] && o2 instanceof short[]) {
return Arrays.equals((short[]) o1, (short[]) o2);
}
}
return Boolean.FALSE;
}
/**
* Return as hash code for the given object; typically the value of
* {@link Object#hashCode()}.
* If the object is an array, this method will delegate to any of the nullSafeHashCode
* methods for arrays in this class.
* If the object is null, this method returns 0.
*
* @param obj check object
* @return object hash code
* @see #nullSafeHashCode(Object[]) #nullSafeHashCode(Object[])
* @see #nullSafeHashCode(boolean[]) #nullSafeHashCode(boolean[])
* @see #nullSafeHashCode(byte[]) #nullSafeHashCode(byte[])
* @see #nullSafeHashCode(char[]) #nullSafeHashCode(char[])
* @see #nullSafeHashCode(double[]) #nullSafeHashCode(double[])
* @see #nullSafeHashCode(float[]) #nullSafeHashCode(float[])
* @see #nullSafeHashCode(int[]) #nullSafeHashCode(int[])
* @see #nullSafeHashCode(long[]) #nullSafeHashCode(long[])
* @see #nullSafeHashCode(short[]) #nullSafeHashCode(short[])
*/
public static int nullSafeHashCode(final Object obj) {
if (obj == null) {
return 0;
}
if (obj.getClass().isArray()) {
if (obj instanceof Object[]) {
return nullSafeHashCode((Object[]) obj);
}
if (obj instanceof boolean[]) {
return nullSafeHashCode((boolean[]) obj);
}
if (obj instanceof byte[]) {
return nullSafeHashCode((byte[]) obj);
}
if (obj instanceof char[]) {
return nullSafeHashCode((char[]) obj);
}
if (obj instanceof double[]) {
return nullSafeHashCode((double[]) obj);
}
if (obj instanceof float[]) {
return nullSafeHashCode((float[]) obj);
}
if (obj instanceof int[]) {
return nullSafeHashCode((int[]) obj);
}
if (obj instanceof long[]) {
return nullSafeHashCode((long[]) obj);
}
if (obj instanceof short[]) {
return nullSafeHashCode((short[]) obj);
}
}
return obj.hashCode();
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final Object[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
// int arraySize = array.length;
for (Object anArray : array) {
hash = Globals.MULTIPLIER * hash + nullSafeHashCode(anArray);
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final boolean[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (boolean bool : array) {
hash = Globals.MULTIPLIER * hash + hashCode(bool);
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final byte[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (byte b : array) {
hash = Globals.MULTIPLIER * hash + b;
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final char[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (char c : array) {
hash = Globals.MULTIPLIER * hash + c;
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final double[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (double d : array) {
hash = Globals.MULTIPLIER * hash + hashCode(d);
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final float[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (float f : array) {
hash = Globals.MULTIPLIER * hash + hashCode(f);
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final int[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (int i : array) {
hash = Globals.MULTIPLIER * hash + i;
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final long[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (long l : array) {
hash = Globals.MULTIPLIER * hash + hashCode(l);
}
return hash;
}
/**
* Return a hash code based on the contents of the specified array.
* If array is null, this method returns 0.
*
* @param array specified array
* @return hash code result
*/
public static int nullSafeHashCode(final short[] array) {
if (array == null) {
return 0;
}
int hash = Globals.INITIAL_HASH;
for (short s : array) {
hash = Globals.MULTIPLIER * hash + s;
}
return hash;
}
/**
* Return the same value as {@link Boolean#hashCode()}.
*
* @param bool boolean value
* @return hash code result
* @see Boolean#hashCode() Boolean#hashCode()
*/
public static int hashCode(final boolean bool) {
return bool ? 1231 : 1237;
}
/**
* Return the same value as {@link Double#hashCode()}.
*
* @param dbl double value
* @return hash code result
* @see Double#hashCode() Double#hashCode()
*/
public static int hashCode(final double dbl) {
return hashCode(Double.doubleToLongBits(dbl));
}
/**
* Return the same value as {@link Float#hashCode()}.
*
* @param flt float value
* @return hash code result
* @see Float#hashCode() Float#hashCode()
*/
public static int hashCode(final float flt) {
return Float.floatToIntBits(flt);
}
/**
* Return the same value as {@link Long#hashCode()}.
*
* @param lng long value
* @return hash code result
* @see Long#hashCode() Long#hashCode()
*/
public static int hashCode(final long lng) {
return (int) (lng ^ (lng >>> 32));
}
//---------------------------------------------------------------------
// Convenience methods for toString output
//---------------------------------------------------------------------
/**
* Determine the class name for the given object.
*
Returns "" if obj is null.
*
* @param obj the object to introspect (maybe null)
* @return the corresponding class name
*/
public static String nullSafeClassName(final Object obj) {
return obj != null ? nullSafeClassName(obj.getClass()) : Globals.DEFAULT_VALUE_STRING;
}
/**
* Determine the class name for the given object.
*
Returns "" if obj is null.
*
* @param clazz the object to introspect (maybe null)
* @return the corresponding class name
*/
public static String nullSafeClassName(final Class clazz) {
return (clazz != null ? clazz.getName() : Globals.DEFAULT_VALUE_STRING);
}
/**
* Return a String representation of the specified Object.
*
Builds a String representation of the contents in case of an array.
* Returns "" if obj is null.
*
* @param obj the object to build a String representation for
* @return a String representation of obj
*/
public static String nullSafeToString(final Object obj) {
if (obj == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (obj instanceof String) {
return (String) obj;
}
if (ClassUtils.isPrimitiveArray(obj.getClass())) {
if (obj instanceof boolean[]) {
return nullSafeToString((boolean[]) obj);
}
if (obj instanceof byte[]) {
return nullSafeToString((byte[]) obj);
}
if (obj instanceof char[]) {
return nullSafeToString((char[]) obj);
}
if (obj instanceof double[]) {
return nullSafeToString((double[]) obj);
}
if (obj instanceof float[]) {
return nullSafeToString((float[]) obj);
}
if (obj instanceof int[]) {
return nullSafeToString((int[]) obj);
}
if (obj instanceof long[]) {
return nullSafeToString((long[]) obj);
}
if (obj instanceof short[]) {
return nullSafeToString((short[]) obj);
}
return ARRAY_START + ARRAY_END;
} else if (obj instanceof Class[]) {
return nullSafeToString((Class[]) obj);
} else if (obj.getClass().isArray()) {
return nullSafeToString(toObjectArray(obj));
} else if (obj.getClass().isPrimitive()) {
return Optional.ofNullable(ClassUtils.primitiveWrapper(obj.getClass()))
.map(wrapperClass -> ClassUtils.findMethod(wrapperClass, "toString", new Class[]{obj.getClass()}))
.map(method -> (String) ReflectionUtils.invokeMethod(method, null, new Object[]{obj}))
.orElse(Globals.DEFAULT_VALUE_STRING);
} else {
return obj.toString();
}
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final Object[] array) {
if (array == null || array.length == 0) {
return Globals.DEFAULT_VALUE_STRING;
}
StringBuilder stringBuilder = new StringBuilder();
Arrays.asList(array).forEach(object -> stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(object));
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final Class[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
Arrays.asList(array).forEach(clazz -> stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(clazz.getName()));
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final boolean[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (boolean bool : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(bool);
}
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final byte[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (byte b : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(b);
}
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final char[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (char ch : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(ch);
}
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final double[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (double d : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(d);
}
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final float[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (float f : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(f);
}
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final int[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (int i : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(i);
}
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final long[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (long l : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(l);
}
return stringBuilderCompletion(stringBuilder);
}
/**
* Return a String representation of the contents of the specified array.
*
The String representation consists of a list of the array's elements,
* enclosed in curly braces ("{}").
* Adjacent elements are separated by the characters ", " (a comma followed by a space).
* Returns "" if array is null.
*
* @param array the array to build a String representation for
* @return a String representation of array
*/
public static String nullSafeToString(final short[] array) {
if (array == null) {
return Globals.DEFAULT_VALUE_STRING;
}
if (array.length == 0) {
return ARRAY_START + ARRAY_END;
}
StringBuilder stringBuilder = new StringBuilder();
for (short s : array) {
stringBuilder.append(ARRAY_ELEMENT_SEPARATOR).append(s);
}
return stringBuilderCompletion(stringBuilder);
}
private static String stringBuilderCompletion(final StringBuilder stringBuilder) {
stringBuilder.insert(ARRAY_ELEMENT_SEPARATOR.length(), ARRAY_START).append(ARRAY_END);
return stringBuilder.substring(ARRAY_ELEMENT_SEPARATOR.length());
}
}