org.litepal.util

类 BaseUtility

java.lang.Object

org.litepal.util.BaseUtility

public class BaseUtility
extends java.lang.Object

A utility class to help LitePal with some base actions that might through any components. These actions can help classes just do the jobs they care, and help them out of the trivial work.

从以下版本开始:

1.0

方法概要

限定符和类型	方法和说明
static java.lang.String	capitalize(java.lang.String string) Capitalize make the first letter of the word be upper case.
static java.lang.String	changeCase(java.lang.String string) It will change the case of the passing parameter into the case defined in litepal.xml file.
static void	checkConditionsCorrect(java.lang.String... conditions) Check the number of question mark existed in conditions[0] equals the number of rest conditions elements or not.
static boolean	containsIgnoreCases(java.util.Collection<java.lang.String> collection, java.lang.String string) This helper method makes up the shortage of contains method in Collection to support the function of case insensitive contains.
static int	count(java.lang.String string, java.lang.String mark) Count how many marks existed in string.
static boolean	isFieldTypeSupported(java.lang.String fieldType) Judge a field type is supported or not.
static boolean	isGenericTypeSupported(java.lang.String genericType) Judge a generic type is supported or not.
static boolean	isLitePalXMLExists() If the litepal.xml configuration file exists.

从类继承的方法 java.lang.Object

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

方法详细资料

changeCase

public static java.lang.String changeCase(java.lang.String string)

It will change the case of the passing parameter into the case defined in litepal.xml file.

参数:

string - The string want to change case.

返回:

The string after changing case. If the name is null, then simply return null.

containsIgnoreCases

public static boolean containsIgnoreCases(java.util.Collection<java.lang.String> collection,
                                          java.lang.String string)

This helper method makes up the shortage of contains method in Collection to support the function of case insensitive contains. It only supports the String generic type of collection, cause other types have no cases concept.

参数:

collection - The collection contains string data.

string - The string want to look for in the collection.

返回:

If the string is in the collection without case concern return true, otherwise return false. If the collection is null, return false.

capitalize

public static java.lang.String capitalize(java.lang.String string)

Capitalize make the first letter of the word be upper case.

参数:

string - The word to capitalize.

返回:

The word after capitalize.

count

public static int count(java.lang.String string,
                        java.lang.String mark)

Count how many marks existed in string.

参数:

string - The source sentence.

mark - The specific substring to count.

返回:

The number of marks existed in string.

checkConditionsCorrect

public static void checkConditionsCorrect(java.lang.String... conditions)

Check the number of question mark existed in conditions[0] equals the number of rest conditions elements or not. If not equals, throws DataSupportException.

参数:

conditions - A string array representing the WHERE part of an SQL statement.

抛出:

DataSupportException

isFieldTypeSupported

public static boolean isFieldTypeSupported(java.lang.String fieldType)

Judge a field type is supported or not. Currently only basic data types and String are supported.

参数:

fieldType - Type of the field.

返回:

Supported return true, not supported return false.

isGenericTypeSupported

public static boolean isGenericTypeSupported(java.lang.String genericType)

Judge a generic type is supported or not. Currently only basic data types and String are supported.

参数:

genericType - Type of the generic field.

返回:

Supported return true, not supported return false.

isLitePalXMLExists

public static boolean isLitePalXMLExists()

If the litepal.xml configuration file exists.

返回:

True if exists, false otherwise.