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Internet2 Groups Management Toolkit
/**
* Copyright 2014 Internet2
*
* Licensed 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.
*/
/*
* @author mchyzer
* $Id: SubjectUtils.java,v 1.5 2009-03-22 02:49:27 mchyzer Exp $
*/
package edu.internet2.middleware.subject;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.annotation.Annotation;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.Timestamp;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.jexl2.Expression;
import org.apache.commons.jexl2.JexlContext;
import org.apache.commons.jexl2.JexlEngine;
import org.apache.commons.jexl2.MapContext;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
*
*/
public class SubjectUtils {
/**
* string format of dates
*/
public static final String DATE_FORMAT = "yyyyMMdd";
/**
* format including minutes and seconds: yyyy/MM/dd HH:mm:ss
*/
public static final String DATE_MINUTES_SECONDS_FORMAT = "yyyy/MM/dd HH:mm:ss";
/**
* format including minutes and seconds: yyyyMMdd HH:mm:ss
*/
public static final String DATE_MINUTES_SECONDS_NO_SLASH_FORMAT = "yyyyMMdd HH:mm:ss";
/**
* date format, make sure to synchronize
*/
final static SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT);
/**
* synchronize code that uses this standard formatter for dates with minutes and seconds
*/
final static SimpleDateFormat dateMinutesSecondsFormat = new SimpleDateFormat(
DATE_MINUTES_SECONDS_FORMAT);
/**
* synchronize code that uses this standard formatter for dates with minutes and seconds
*/
final static SimpleDateFormat dateMinutesSecondsNoSlashFormat = new SimpleDateFormat(
DATE_MINUTES_SECONDS_NO_SLASH_FORMAT);
/**
* format on screen of config for milestone: yyyy/MM/dd HH:mm:ss.SSS
*/
public static final String TIMESTAMP_FORMAT = "yyyy/MM/dd HH:mm:ss.SSS";
/**
* start of error parsing messages
*/
private static final String errorStart = "Invalid timestamp, please use any of the formats: "
+ DATE_FORMAT + ", " + TIMESTAMP_FORMAT + ", " + DATE_MINUTES_SECONDS_FORMAT + ": ";
/**
* format on screen of config for milestone: yyyyMMdd HH:mm:ss.SSS
*/
public static final String TIMESTAMP_NO_SLASH_FORMAT = "yyyyMMdd HH:mm:ss.SSS";
/**
* format: yyyy/MM/dd HH:mm:ss.SSS synchronize code that uses this standard formatter for timestamps
*/
final static SimpleDateFormat timestampFormat = new SimpleDateFormat(TIMESTAMP_FORMAT);
/**
* synchronize code that uses this standard formatter for timestamps
*/
final static SimpleDateFormat timestampNoSlashFormat = new SimpleDateFormat(
TIMESTAMP_NO_SLASH_FORMAT);
/**
* special number when a number is not found
*/
public static final int NOT_FOUND = -999999999;
/**
* The name says it all.
*/
public static final int DEFAULT_BUFFER_SIZE = 1024 * 4;
/** logger */
private static Log log = edu.internet2.middleware.grouper.util.GrouperUtil.getLog(SubjectUtils.class);
/**
* cache the properties read from resource
*/
private static Map resourcePropertiesCache = new HashMap();
/**
* create one jexlEngine instance so we can cache expressions
*/
private static final JexlEngine jexlEngine = new JexlEngine();
/**
* settings for jexlEngine
*/
static {
jexlEngine.setCache(512);
jexlEngine.setSilent(false);
}
/**
* do a case-insensitive matching
* @param theEnumClass class of the enum
* @param generic type
*
* @param string
* @param exceptionOnNotFound true if exception should be thrown on not found
* @return the enum or null or exception if not found
* @throws RuntimeException if there is a problem
*/
public static > E enumValueOfIgnoreCase(Class theEnumClass, String string,
boolean exceptionOnNotFound) throws RuntimeException {
return enumValueOfIgnoreCase(theEnumClass, string, exceptionOnNotFound, true);
}
/**
* equalsignorecase
* @param str1
* @param str2
* @return true if the strings are equal ignore case
*/
public static boolean equalsIgnoreCase(String str1, String str2) {
return str1 == null ? str2 == null : str1.equalsIgnoreCase(str2);
}
/**
* split a string based on a separator into an array, and trim each entry (see
* the Commons Util trim() for more details)
*
* @param input
* is the delimited input to split and trim
* @param separator
* is what to split on
*
* @return the array of items after split and trimmed, or null if input is null. will be trimmed to empty
*/
public static String[] splitTrim(String input, String separator) {
return splitTrim(input, separator, true);
}
/**
* split a string based on a separator into an array, and trim each entry (see
* the Commons Util trim() for more details)
*
* @param input
* is the delimited input to split and trim
* @param separator
* is what to split on
*
* @return the set of items after split and trimmed, or null if input is null. will be trimmed to empty
*/
public static Set splitTrimToSet(String input, String separator) {
if (isBlank(input)) {
return null;
}
String[] array = splitTrim(input, separator);
return toSet(array);
}
/**
* split a string based on a separator into an array, and trim each entry (see
* the Commons Util trim() for more details)
*
* @param input
* is the delimited input to split and trim
* @param separator
* is what to split on
* @param treatAdjacentSeparatorsAsOne
* @return the array of items after split and trimmed, or null if input is null. will be trimmed to empty
*/
public static String[] splitTrim(String input, String separator, boolean treatAdjacentSeparatorsAsOne) {
if (isBlank(input)) {
return null;
}
//first split
String[] items = treatAdjacentSeparatorsAsOne ? splitByWholeSeparator(input, separator) :
split(input, separator);
//then trim
for (int i = 0; (items != null) && (i < items.length); i++) {
items[i] = trim(items[i]);
}
//return the array
return items;
}
/**
* Splits the provided text into an array, separator string specified.
*
* The separator(s) will not be included in the returned String array.
* Adjacent separators are treated as one separator.
*
* A null input String returns null.
* A null separator splits on whitespace.
*
*
* StringUtils.split(null, *) = null
* StringUtils.split("", *) = []
* StringUtils.split("ab de fg", null) = ["ab", "de", "fg"]
* StringUtils.split("ab de fg", null) = ["ab", "de", "fg"]
* StringUtils.split("ab:cd:ef", ":") = ["ab", "cd", "ef"]
* StringUtils.split("abstemiouslyaeiouyabstemiously", "aeiouy") = ["bst", "m", "sl", "bst", "m", "sl"]
* StringUtils.split("abstemiouslyaeiouyabstemiously", "aeiouy") = ["abstemiously", "abstemiously"]
*
*
* @param str the String to parse, may be null
* @param separator String containing the String to be used as a delimiter,
* null splits on whitespace
* @return an array of parsed Strings, null if null String was input
*/
public static String[] splitByWholeSeparator(String str, String separator) {
return splitByWholeSeparator(str, separator, -1);
}
/**
* Splits the provided text into an array, separator string specified.
* Returns a maximum of max substrings.
*
* The separator(s) will not be included in the returned String array.
* Adjacent separators are treated as one separator.
*
* A null input String returns null.
* A null separator splits on whitespace.
*
*
* StringUtils.splitByWholeSeparator(null, *, *) = null
* StringUtils.splitByWholeSeparator("", *, *) = []
* StringUtils.splitByWholeSeparator("ab de fg", null, 0) = ["ab", "de", "fg"]
* StringUtils.splitByWholeSeparator("ab de fg", null, 0) = ["ab", "de", "fg"]
* StringUtils.splitByWholeSeparator("ab:cd:ef", ":", 2) = ["ab", "cd"]
* StringUtils.splitByWholeSeparator("abstemiouslyaeiouyabstemiously", "aeiouy", 2) = ["bst", "m"]
* StringUtils.splitByWholeSeparator("abstemiouslyaeiouyabstemiously", "aeiouy", 2) = ["abstemiously", "abstemiously"]
*
*
* @param str the String to parse, may be null
* @param separator String containing the String to be used as a delimiter,
* null splits on whitespace
* @param max the maximum number of elements to include in the returned
* array. A zero or negative value implies no limit.
* @return an array of parsed Strings, null if null String was input
*/
public static String[] splitByWholeSeparator(String str, String separator, int max) {
if (str == null) {
return null;
}
int len = str.length();
if (len == 0) {
return EMPTY_STRING_ARRAY;
}
if ((separator == null) || ("".equals(separator))) {
// Split on whitespace.
return split(str, null, max);
}
int separatorLength = separator.length();
ArrayList substrings = new ArrayList();
int numberOfSubstrings = 0;
int beg = 0;
int end = 0;
while (end < len) {
end = str.indexOf(separator, beg);
if (end > -1) {
if (end > beg) {
numberOfSubstrings += 1;
if (numberOfSubstrings == max) {
end = len;
substrings.add(str.substring(beg));
} else {
// The following is OK, because String.substring( beg, end ) excludes
// the character at the position 'end'.
substrings.add(str.substring(beg, end));
// Set the starting point for the next search.
// The following is equivalent to beg = end + (separatorLength - 1) + 1,
// which is the right calculation:
beg = end + separatorLength;
}
} else {
// We found a consecutive occurrence of the separator, so skip it.
beg = end + separatorLength;
}
} else {
// String.substring( beg ) goes from 'beg' to the end of the String.
substrings.add(str.substring(beg));
end = len;
}
}
return (String[]) substrings.toArray(new String[substrings.size()]);
}
/**
* do a case-insensitive matching
* @param theEnumClass class of the enum
* @param generic type
*
* @param string
* @param exceptionOnNotFound true if exception should be thrown on not found
* @param exceptionIfInvalid if there is a string, but it is invalid, if should throw exception
* @return the enum or null or exception if not found
* @throws RuntimeException if there is a problem
*/
public static > E enumValueOfIgnoreCase(Class theEnumClass, String string,
boolean exceptionOnNotFound, boolean exceptionIfInvalid) throws RuntimeException {
if (!exceptionOnNotFound && isBlank(string)) {
return null;
}
for (E e : theEnumClass.getEnumConstants()) {
if (equalsIgnoreCase(string, e.name())) {
return e;
}
}
if (!exceptionIfInvalid) {
return null;
}
StringBuilder error = new StringBuilder(
"Cant find " + theEnumClass.getSimpleName() + " from string: '").append(string);
error.append("', expecting one of: ");
for (E e : theEnumClass.getEnumConstants()) {
error.append(e.name()).append(", ");
}
throw new RuntimeException(error.toString());
}
/**
* If we can, inject this into the exception, else return false
* @param t
* @param message
* @return true if success, false if not
*/
public static boolean injectInException(Throwable t, String message) {
String throwableFieldName = null;//GrouperConfig.getProperty("throwable.data.field.name");
//if (StringUtils.isBlank(throwableFieldName)) {
//this is the field for sun java 1.5
throwableFieldName = "detailMessage";
//}
try {
String currentValue = t.getMessage();
if (!isBlank(currentValue)) {
currentValue += ",\n" + message;
} else {
currentValue = message;
}
assignField(t, throwableFieldName, currentValue);
return true;
} catch (Throwable t2) {
//dont worry about what the problem is, return false so the caller can log
log.error(message);
return false;
}
}
/**
* assign data to a field
*
* @param theClass
* the class which has the method
* @param invokeOn
* to call on or null for static
* @param fieldName
* method name to call
* @param dataToAssign
* data
* @param callOnSupers
* if static and method not exists, try on supers
* @param overrideSecurity
* true to call on protected or private etc methods
* @param typeCast
* true if we should typecast
* @param annotationWithValueOverride
* annotation with value of override
*/
public static void assignField(Class theClass, Object invokeOn,
String fieldName, Object dataToAssign, boolean callOnSupers,
boolean overrideSecurity, boolean typeCast,
Class annotationWithValueOverride) {
if (theClass == null && invokeOn != null) {
theClass = invokeOn.getClass();
}
Field field = field(theClass, fieldName, callOnSupers, true);
assignField(field, invokeOn, dataToAssign, overrideSecurity, typeCast,
annotationWithValueOverride);
}
/**
* assign data to a field. Will find the field in superclasses, will
* typecast, and will override security (private, protected, etc)
*
* @param theClass
* the class which has the method
* @param invokeOn
* to call on or null for static
* @param fieldName
* method name to call
* @param dataToAssign
* data
* @param annotationWithValueOverride
* annotation with value of override
*/
public static void assignField(Class theClass, Object invokeOn,
String fieldName, Object dataToAssign,
Class annotationWithValueOverride) {
assignField(theClass, invokeOn, fieldName, dataToAssign, true, true,
true, annotationWithValueOverride);
}
/**
* assign data to a field
*
* @param field
* is the field to assign to
* @param invokeOn
* to call on or null for static
* @param dataToAssign
* data
* @param overrideSecurity
* true to call on protected or private etc methods
* @param typeCast
* true if we should typecast
*/
public static void assignField(Field field, Object invokeOn,
Object dataToAssign, boolean overrideSecurity, boolean typeCast) {
try {
Class fieldType = field.getType();
// typecast
if (typeCast) {
dataToAssign =
typeCast(dataToAssign, fieldType,
true, true);
}
if (overrideSecurity) {
field.setAccessible(true);
}
field.set(invokeOn, dataToAssign);
} catch (Exception e) {
throw new RuntimeException("Cant assign reflection field: "
+ (field == null ? null : field.getName()) + ", on: "
+ className(invokeOn) + ", with args: "
+ classNameCollection(dataToAssign), e);
}
}
/**
* assign data to a field
*
* @param field
* is the field to assign to
* @param invokeOn
* to call on or null for static
* @param dataToAssign
* data
* @param overrideSecurity
* true to call on protected or private etc methods
* @param typeCast
* true if we should typecast
* @param annotationWithValueOverride
* annotation with value of override, or null if none
*/
@SuppressWarnings("unchecked")
public static void assignField(Field field, Object invokeOn,
Object dataToAssign, boolean overrideSecurity, boolean typeCast,
Class annotationWithValueOverride) {
if (annotationWithValueOverride != null) {
// see if in annotation
Annotation annotation = field
.getAnnotation(annotationWithValueOverride);
if (annotation != null) {
// type of the value, or String if not specific Class
// typeOfAnnotationValue = typeCast ? field.getType() :
// String.class; dataToAssign =
// AnnotationUtils.retrieveAnnotationValue(
// typeOfAnnotationValue, annotation, "value");
throw new RuntimeException("Not supported");
}
}
assignField(field, invokeOn, dataToAssign, overrideSecurity, typeCast);
}
/**
* assign data to a field. Will find the field in superclasses, will
* typecast, and will override security (private, protected, etc)
*
* @param invokeOn
* to call on or null for static
* @param fieldName
* method name to call
* @param dataToAssign
* data
*/
public static void assignField(Object invokeOn, String fieldName,
Object dataToAssign) {
assignField(null, invokeOn, fieldName, dataToAssign, true, true, true,
null);
}
/**
* get a field object for a class, potentially in superclasses
*
* @param theClass
* @param fieldName
* @param callOnSupers
* true if superclasses should be looked in for the field
* @param throwExceptionIfNotFound
* will throw runtime exception if not found
* @return the field object or null if not found (or exception if param is
* set)
*/
public static Field field(Class theClass, String fieldName,
boolean callOnSupers, boolean throwExceptionIfNotFound) {
try {
Field field = theClass.getDeclaredField(fieldName);
// found it
return field;
} catch (NoSuchFieldException e) {
// if method not found
// if traversing up, and not Object, and not instance method
if (callOnSupers && !theClass.equals(Object.class)) {
return field(theClass.getSuperclass(), fieldName, callOnSupers,
throwExceptionIfNotFound);
}
}
// maybe throw an exception
if (throwExceptionIfNotFound) {
throw new RuntimeException("Cant find field: " + fieldName
+ ", in: " + theClass + ", callOnSupers: " + callOnSupers);
}
return null;
}
/**
* If necessary, convert an object to another type. if type is Object.class, just return the input.
* Do not convert null to an empty primitive
* @param is template type
* @param value
* @param theClass
* @return the object of that instance converted into something else
*/
public static T typeCast(Object value, Class theClass) {
//default behavior is not to convert null to empty primitive
return typeCast(value, theClass, false, false);
}
/**
* If necessary, convert an object to another type. if type is Object.class, just return the input
* @param is the type to return
* @param value
* @param theClass
* @param convertNullToDefaultPrimitive if the value is null, and theClass is primitive, should we
* convert the null to a primitive default value
* @param useNewInstanceHooks if theClass is not recognized, then honor the string "null", "newInstance",
* or get a constructor with one param, and call it
* @return the object of that instance converted into something else
*/
@SuppressWarnings({ "unchecked", "cast" })
public static T typeCast(Object value, Class theClass,
boolean convertNullToDefaultPrimitive, boolean useNewInstanceHooks) {
if (Object.class.equals(theClass)) {
return (T)value;
}
if (value==null) {
if (convertNullToDefaultPrimitive && theClass.isPrimitive()) {
if ( theClass == boolean.class ) {
return (T)Boolean.FALSE;
}
if ( theClass == char.class ) {
return (T)(Object)0;
}
//convert 0 to the type
return typeCast(0, theClass, false, false);
}
return null;
}
if (theClass.isInstance(value)) {
return (T)value;
}
//if array, get the base class
if (theClass.isArray() && theClass.getComponentType() != null) {
theClass = (Class)theClass.getComponentType();
}
Object resultValue = null;
//loop through and see the primitive types etc
if (theClass.equals(Date.class)) {
resultValue = dateValue(value);
} else if (theClass.equals(String.class)) {
resultValue = stringValue(value);
} else if (theClass.equals(Timestamp.class)) {
resultValue = toTimestamp(value);
} else if (theClass.equals(Boolean.class) || theClass.equals(boolean.class)) {
resultValue = booleanObjectValue(value);
} else if (theClass.equals(Integer.class) || theClass.equals(int.class)) {
resultValue = intObjectValue(value, true);
} else if (theClass.equals(Double.class) || theClass.equals(double.class)) {
resultValue = doubleObjectValue(value, true);
} else if (theClass.equals(Float.class) || theClass.equals(float.class)) {
resultValue = floatObjectValue(value, true);
} else if (theClass.equals(Long.class) || theClass.equals(long.class)) {
resultValue = longObjectValue(value, true);
} else if (theClass.equals(Byte.class) || theClass.equals(byte.class)) {
resultValue = byteObjectValue(value);
} else if (theClass.equals(Character.class) || theClass.equals(char.class)) {
resultValue = charObjectValue(value);
} else if (theClass.equals(Short.class) || theClass.equals(short.class)) {
resultValue = shortObjectValue(value);
} else if ( theClass.isEnum() && (value instanceof String) ) {
resultValue = Enum.valueOf((Class)theClass, (String) value);
} else if ( theClass.equals(Class.class) && (value instanceof String) ) {
resultValue = forName((String)value);
} else if (useNewInstanceHooks && value instanceof String) {
String stringValue = (String)value;
if ( StringUtils.equals("null", stringValue)) {
resultValue = null;
} else if (StringUtils.equals("newInstance", stringValue)) {
resultValue = newInstance(theClass);
} else { // instantiate using string
//note, we could typecast this to fit whatever is there... right now this is used for annotation
try {
Constructor constructor = theClass.getConstructor(new Class[] {String.class} );
resultValue = constructor.newInstance(new Object[] {stringValue} );
} catch (Exception e) {
throw new RuntimeException("Cant find constructor with string for class: " + theClass);
}
}
} else {
throw new RuntimeException("Cannot convert from type: " + value.getClass() + " to type: " + theClass);
}
return (T)resultValue;
}
/**
*
* Convert an object to a java.util.Date. allows, dates, null, blank,
* yyyymmdd or yyyymmdd hh24:mm:ss
* or yyyy/MM/dd HH:mm:ss.SSS
*
* @param inputObject
* is the String or Date to convert
*
* @return the Date
*/
public static Date dateValue(Object inputObject) {
if (inputObject == null) {
return null;
}
if (inputObject instanceof java.util.Date) {
return (Date)inputObject;
}
if (inputObject instanceof String) {
String input = (String)inputObject;
//trim and handle null and empty
if (StringUtils.isBlank(input)) {
return null;
}
try {
if (input.length() == 8) {
return dateFormat().parse(input);
}
if (!StringUtils.contains(input, '.')) {
if (StringUtils.contains(input, '/')) {
return dateMinutesSecondsFormat.parse(input);
}
//else no slash
return dateMinutesSecondsNoSlashFormat.parse(input);
}
if (StringUtils.contains(input, '/')) {
//see if the period is 6 back
int lastDotIndex = input.lastIndexOf('.');
if (lastDotIndex == input.length() - 7) {
String nonNanoInput = input.substring(0,input.length()-3);
Date date = timestampFormat.parse(nonNanoInput);
//get the last 3
String lastThree = input.substring(input.length()-3,input.length());
int lastThreeInt = Integer.parseInt(lastThree);
Timestamp timestamp = new Timestamp(date.getTime());
timestamp.setNanos(timestamp.getNanos() + (lastThreeInt * 1000));
return timestamp;
}
return timestampFormat.parse(input);
}
//else no slash
return timestampNoSlashFormat.parse(input);
} catch (ParseException pe) {
throw new RuntimeException(errorStart + toStringForLog(input));
}
}
throw new RuntimeException("Cannot convert Object to date : " + toStringForLog(inputObject));
}
/**
* See if the input is null or if string, if it is empty or blank (whitespace)
* @param input
* @return true if blank
*/
public static boolean isBlank(Object input) {
if (null == input) {
return true;
}
return (input instanceof String && StringUtils.isBlank((String)input));
}
/**
* get the Integer value of an object
*
* @param input
* is a number or String
* @param allowNullBlank true if convert null or blank to null
*
* @return the Integer equivalent
*/
public static Integer intObjectValue(Object input, boolean allowNullBlank) {
if (input instanceof Integer) {
return (Integer) input;
}
if (allowNullBlank && isBlank(input)) {
return null;
}
return Integer.valueOf(intValue(input));
}
/**
* convert an object to a int
* @param input
* @return the number
*/
public static int intValue(Object input) {
if (input instanceof String) {
String string = (String)input;
return Integer.parseInt(string);
}
if (input instanceof Number) {
return ((Number)input).intValue();
}
if (false) {
if (input == null) {
return 0;
}
if (input instanceof String || StringUtils.isBlank((String)input)) {
return 0;
}
}
throw new RuntimeException("Cannot convert to int: " + className(input));
}
/**
* convert an object to a int
* @param input
* @param valueIfNull is if the input is null or empty, return this value
* @return the number
*/
public static int intValue(Object input, int valueIfNull) {
if (input == null || "".equals(input)) {
return valueIfNull;
}
return intObjectValue(input, false);
}
/**
* get the int value of an object, do not throw an exception if there is an
* error
*
* @param input
* is a number or String
*
* @return the int equivalent
*/
public static int intValueNoError(Object input) {
if (input == null || (input instanceof String
&& StringUtils.isBlank((String)input))) {
return NOT_FOUND;
}
try {
return intValue(input);
} catch (Exception e) {
//no need to log here
}
return NOT_FOUND;
}
/**
* convert a date to the standard string yyyymmdd
* @param date
* @return the string value
*/
public static String stringValue(java.util.Date date) {
synchronized (SubjectUtils.class) {
if (date == null) {
return null;
}
String theString = dateFormat().format(date);
return theString;
}
}
/**
* convert an object to a string
*
* @param input
* is the object to convert
*
* @return the String conversion of the object
*/
public static String stringValue(Object input) {
//this isnt needed
if (input == null) {
return (String) input;
}
if (input instanceof Timestamp) {
//convert to yyyy/MM/dd HH:mm:ss.SSS
return timestampToString((Timestamp) input);
}
if (input instanceof Date) {
//convert to yyyymmdd
return stringValue((Date) input);
}
if (input instanceof Number) {
DecimalFormat decimalFormat = new DecimalFormat(
"###################.###############");
return decimalFormat.format(((Number) input).doubleValue());
}
return input.toString();
}
/**
* Convert a timestamp into a string: yyyy/MM/dd HH:mm:ss.SSS
* @param timestamp
* @return the string representation
*/
public synchronized static String timestampToString(Date timestamp) {
if (timestamp == null) {
return null;
}
return timestampFormat.format(timestamp);
}
/**
* Get the contents of an InputStream as a String.
* @param input the InputStream to read from
* @param encoding The name of a supported character encoding. See the
* IANA
* Charset Registry for a list of valid encoding types.
* @return the requested String
* @throws IOException In case of an I/O problem
*/
public static String toString(InputStream input, String encoding) throws IOException {
StringWriter sw = new StringWriter();
copy(input, sw, encoding);
return sw.toString();
}
/**
*
* Convert a string or object to a timestamp (could be string, date, timestamp, etc)
* yyyymmdd
* or
* yyyy/MM/dd HH:mm:ss
* or
* yyyy/MM/dd HH:mm:ss.SSS
* or
* yyyy/MM/dd HH:mm:ss.SSSSSS
*
*
*
* @param input
* @return the timestamp
* @throws RuntimeException if invalid format
*/
public static Timestamp toTimestamp(Object input) {
if (null == input) {
return null;
} else if (input instanceof java.sql.Timestamp) {
return (Timestamp) input;
} else if (input instanceof String) {
return stringToTimestamp((String) input);
} else if (input instanceof Date) {
return new Timestamp(((Date)input).getTime());
} else if (input instanceof java.sql.Date) {
return new Timestamp(((java.sql.Date)input).getTime());
} else {
throw new RuntimeException("Cannot convert Object to timestamp : " + input);
}
}
/**
* null safe classname method, gets the unenhanced name
*
* @param object
* @return the classname
*/
public static String className(Object object) {
return object == null ? null : object.getClass()
.getName();
}
/**
* null safe classname method, max out at 20
*
* @param object
* @return the classname
*/
public static String classNameCollection(Object object) {
if (object == null) {
return null;
}
StringBuffer result = new StringBuffer();
Iterator iterator = iterator(object);
int length = length(object);
for (int i = 0; i < length && i < 20; i++) {
result.append(className(next(object, iterator, i)));
if (i != length - 1) {
result.append(", ");
}
}
return result.toString();
}
/**
* Convert an object to a byte, allow nulls
* @param input
* @return the boolean object value
*/
public static BigDecimal bigDecimalObjectValue(Object input) {
if (input instanceof BigDecimal) {
return (BigDecimal)input;
}
if (isBlank(input)) {
return null;
}
return BigDecimal.valueOf(doubleValue(input));
}
/**
* get the Boolean value for an object
*
* @param object
* @return the Boolean or null if null or empty
*/
public static Boolean booleanObjectValue(Object object) {
if (nullOrBlank(object)) {
return null;
}
return booleanValue(object);
}
/**
* get the boolean value for an object, cant be null or blank
*
* @param object
* @return the boolean
*/
public static boolean booleanValue(Object object) {
// first handle blanks
if (nullOrBlank(object)) {
throw new RuntimeException(
"Expecting something which can be converted to boolean, but is null or blank: '"
+ object + "'");
}
// its not blank, just convert
if (object instanceof Boolean) {
return (Boolean) object;
}
if (object instanceof String) {
String string = (String) object;
if (StringUtils.equalsIgnoreCase(string, "true")
|| StringUtils.equalsIgnoreCase(string, "t")
|| StringUtils.equalsIgnoreCase(string, "yes")
|| StringUtils.equalsIgnoreCase(string, "y")) {
return true;
}
if (StringUtils.equalsIgnoreCase(string, "false")
|| StringUtils.equalsIgnoreCase(string, "f")
|| StringUtils.equalsIgnoreCase(string, "no")
|| StringUtils.equalsIgnoreCase(string, "n")) {
return false;
}
throw new RuntimeException(
"Invalid string to boolean conversion: '" + string
+ "' expecting true|false or t|f or yes|no or y|n case insensitive");
}
throw new RuntimeException("Cant convert object to boolean: "
+ object.getClass());
}
/**
* get the boolean value for an object
*
* @param object
* @param defaultBoolean
* if object is null or empty
* @return the boolean
*/
public static boolean booleanValue(Object object, boolean defaultBoolean) {
if (nullOrBlank(object)) {
return defaultBoolean;
}
return booleanValue(object);
}
/**
* Convert an object to a byte, allow nulls
* @param input
* @return the boolean object value
*/
public static Byte byteObjectValue(Object input) {
if (input instanceof Byte) {
return (Byte)input;
}
if (isBlank(input)) {
return null;
}
return Byte.valueOf(byteValue(input));
}
/**
* convert an object to a byte
* @param input
* @return the byte
*/
public static byte byteValue(Object input) {
if (input instanceof String) {
String string = (String)input;
return Byte.parseByte(string);
}
if (input instanceof Number) {
return ((Number)input).byteValue();
}
throw new RuntimeException("Cannot convert to byte: " + className(input));
}
/**
* get the Character wrapper value for the input
* @param input allow null, return null
* @return the Character object wrapper
*/
public static Character charObjectValue(Object input) {
if (input instanceof Character) {
return (Character) input;
}
if (isBlank(input)) {
return null;
}
return new Character(charValue(input));
}
/**
* convert an object to a char
* @param input
* @return the number
*/
public static char charValue(Object input) {
if (input instanceof Character) {
return ((Character) input).charValue();
}
//if string length 1, thats ok
if (input instanceof String) {
String inputString = (String) input;
if (inputString.length() == 1) {
return inputString.charAt(0);
}
}
throw new RuntimeException("Cannot convert to char: "
+ (input == null ? null : (input.getClass() + ", " + input)));
}
/**
* get the Double value of an object
*
* @param input
* is a number or String
* @param allowNullBlank used to default to false, if true, return null if nul inputted
*
* @return the Double equivalent
*/
public static Double doubleObjectValue(Object input, boolean allowNullBlank) {
if (input instanceof Double) {
return (Double) input;
}
if (allowNullBlank && isBlank(input)) {
return null;
}
return Double.valueOf(doubleValue(input));
}
/**
* get the double value of an object
*
* @param input
* is a number or String
*
* @return the double equivalent
*/
public static double doubleValue(Object input) {
if (input instanceof String) {
String string = (String)input;
return Double.parseDouble(string);
}
if (input instanceof Number) {
return ((Number)input).doubleValue();
}
throw new RuntimeException("Cannot convert to double: " + className(input));
}
/**
* get the double value of an object, do not throw an
* exception if there is an
* error
*
* @param input
* is a number or String
*
* @return the double equivalent
*/
public static double doubleValueNoError(Object input) {
if (input == null || (input instanceof String
&& StringUtils.isBlank((String)input))) {
return NOT_FOUND;
}
try {
return doubleValue(input);
} catch (Exception e) {
//no need to log here
}
return NOT_FOUND;
}
/**
* get the Float value of an object
*
* @param input
* is a number or String
* @param allowNullBlank true if allow null or blank
*
* @return the Float equivalent
*/
public static Float floatObjectValue(Object input, boolean allowNullBlank) {
if (input instanceof Float) {
return (Float) input;
}
if (allowNullBlank && isBlank(input)) {
return null;
}
return Float.valueOf(floatValue(input));
}
/**
* get the float value of an object
*
* @param input
* is a number or String
*
* @return the float equivalent
*/
public static float floatValue(Object input) {
if (input instanceof String) {
String string = (String)input;
return Float.parseFloat(string);
}
if (input instanceof Number) {
return ((Number)input).floatValue();
}
throw new RuntimeException("Cannot convert to float: " + className(input));
}
/**
* get the float value of an object, do not throw an exception if there is an
* error
*
* @param input
* is a number or String
*
* @return the float equivalent
*/
public static float floatValueNoError(Object input) {
if (input == null || (input instanceof String
&& StringUtils.isBlank((String)input))) {
return NOT_FOUND;
}
try {
return floatValue(input);
} catch (Exception e) {
log.error(e);
}
return NOT_FOUND;
}
/**
* get the Long value of an object
*
* @param input
* is a number or String
* @param allowNullBlank true if null or blank converts to null
*
* @return the Long equivalent
*/
public static Long longObjectValue(Object input, boolean allowNullBlank) {
if (input instanceof Long) {
return (Long) input;
}
if (allowNullBlank && isBlank(input)) {
return null;
}
return Long.valueOf(longValue(input));
}
/**
* convert an object to a long
* @param input
* @return the number
*/
public static long longValue(Object input) {
if (input instanceof String) {
String string = (String)input;
return Long.parseLong(string);
}
if (input instanceof Number) {
return ((Number)input).longValue();
}
throw new RuntimeException("Cannot convert to long: " + className(input));
}
/**
* convert an object to a long
* @param input
* @param valueIfNull is if the input is null or empty, return this value
* @return the number
*/
public static long longValue(Object input, long valueIfNull) {
if (input == null || "".equals(input)) {
return valueIfNull;
}
return longObjectValue(input, false);
}
/**
* get the long value of an object, do not throw an exception if there is an
* error
*
* @param input
* is a number or String
*
* @return the long equivalent
*/
public static long longValueNoError(Object input) {
if (input == null || (input instanceof String
&& StringUtils.isBlank((String)input))) {
return NOT_FOUND;
}
try {
return longValue(input);
} catch (Exception e) {
//no need to log here
}
return NOT_FOUND;
}
/**
* get the Short value of an object. converts null or blank to null
*
* @param input
* is a number or String
*
* @return the Long equivalent
*/
public static Short shortObjectValue(Object input) {
if (input instanceof Short) {
return (Short) input;
}
if (isBlank(input)) {
return null;
}
return Short.valueOf(shortValue(input));
}
/**
* convert an object to a short
* @param input
* @return the number
*/
public static short shortValue(Object input) {
if (input instanceof String) {
String string = (String)input;
return Short.parseShort(string);
}
if (input instanceof Number) {
return ((Number)input).shortValue();
}
throw new RuntimeException("Cannot convert to short: " + className(input));
}
/**
* Returns the class object.
* @param origClassName is fully qualified
* @return the class
*/
public static Class forName(String origClassName) {
try {
return Class.forName(origClassName);
} catch (Throwable t) {
throw new RuntimeException("Problem loading class: " + origClassName, t);
}
}
/**
* Construct a class
* @param template type
* @param theClass
* @return the instance
*/
public static T newInstance(Class theClass) {
try {
return theClass.newInstance();
} catch (Throwable e) {
if (theClass != null && Modifier.isAbstract(theClass.getModifiers())) {
throw new RuntimeException("Problem with class: " + theClass + ", maybe because it is abstract!", e);
}
throw new RuntimeException("Problem with class: " + theClass, e);
}
}
/**
* get the timestamp format for this thread
* if you call this make sure to synchronize on FastDateUtils.class
* @return the timestamp format
*/
synchronized static SimpleDateFormat dateFormat() {
return dateFormat;
}
/**
* print out various types of objects
*
* @param object
* @return the string value
*/
public static String toStringForLog(Object object) {
StringBuilder result = new StringBuilder();
toStringForLogHelper(object, -1, result);
return result.toString();
}
/**
* print out various types of objects
*
* @param object
* @param maxChars is the max chars that should be returned (abbreviate if longer), or -1 for any amount
* @return the string value
*/
public static String toStringForLog(Object object, int maxChars) {
StringBuilder result = new StringBuilder();
toStringForLogHelper(object, -1, result);
String resultString = result.toString();
if (maxChars != -1) {
return StringUtils.abbreviate(resultString, maxChars);
}
return resultString;
}
/**
* print out various types of objects
*
* @param object
* @param maxChars is where it should stop when figuring out object. note, result might be longer than max...
* need to abbreviate when back
* @param result is where to append to
*/
@SuppressWarnings("unchecked")
private static void toStringForLogHelper(Object object, int maxChars, StringBuilder result) {
try {
if (object == null) {
result.append("null");
} else if (object.getClass().isArray()) {
// handle arrays
int length = Array.getLength(object);
if (length == 0) {
result.append("Empty array");
} else {
result.append("Array size: ").append(length).append(": ");
for (int i = 0; i < length; i++) {
result.append("[").append(i).append("]: ").append(
Array.get(object, i)).append("\n");
if (maxChars != -1 && result.length() > maxChars) {
return;
}
}
}
} else if (object instanceof Collection) {
//give size and type if collection
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