java.lang.Object
- org.hibernate.dialect.function.AbstractAnsiTrimEmulationFunction
- - org.hibernate.dialect.function.AnsiTrimEmulationFunction

所有已实现的接口:

SQLFunction
```
public class AnsiTrimEmulationFunction
extends AbstractAnsiTrimEmulationFunction
```
A SQLFunction implementation that emulates the ANSI SQL trim function on dialects which do not support the full definition. However, this function definition does assume the availability of ltrim, rtrim, and replace functions which it uses in various combinations to emulate the desired ANSI trim() functionality.

作者:

Steve Ebersole

字段概要

字段
修饰符和类型	字段	说明
`static String`	`BOTH_SPACE_TRIM_FROM_TEMPLATE`	The SQLFunctionTemplate pattern for the trimming both leading and trailing spaces, with the optional FROM keyword.
`static String`	`BOTH_SPACE_TRIM_TEMPLATE`	The SQLFunctionTemplate pattern for the trimming both leading and trailing spaces
`static String`	`BOTH_TRIM_TEMPLATE`	A template for the series of calls required to trim non-space chars from both the beginning and the end of text.
`static String`	`LEADING_SPACE_TRIM_TEMPLATE`	The SQLFunctionTemplate pattern for the trimming leading spaces
`static String`	`LEADING_TRIM_TEMPLATE`	A template for the series of calls required to trim non-space chars from the beginning of text.
`static String`	`LTRIM`	The default `ltrim` function name
`static String`	`REPLACE`	The default `replace` function name
`static String`	`RTRIM`	The default `rtrim` function name
`static String`	`SPACE_PLACEHOLDER`	The placeholder used to represent whitespace
`static String`	`TRAILING_SPACE_TRIM_TEMPLATE`	The SQLFunctionTemplate pattern for the trimming trailing spaces
`static String`	`TRAILING_TRIM_TEMPLATE`	A template for the series of calls required to trim non-space chars from the end of text.

构造器概要

构造器
构造器	说明
`AnsiTrimEmulationFunction()`	Constructs a new AnsiTrimEmulationFunction using `LTRIM`, `RTRIM`, and `REPLACE` respectively.
`AnsiTrimEmulationFunction(String ltrimFunctionName, String rtrimFunctionName, String replaceFunctionName)`	Constructs a `trim()` emulation function definition using the specified function calls.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`protected SQLFunction`	`resolveBothSpaceTrimFromFunction()`	Resolve the function definition which should be used to trim both leading and trailing spaces.
`protected SQLFunction`	`resolveBothSpaceTrimFunction()`	Resolve the function definition which should be used to trim both leading and trailing spaces.
`protected SQLFunction`	`resolveBothTrimFunction()`	Resolve the function definition which should be used to trim the specified character from both the beginning (leading) and end (trailing) of the trim source.
`protected SQLFunction`	`resolveLeadingSpaceTrimFunction()`	Resolve the function definition which should be used to trim leading spaces.
`protected SQLFunction`	`resolveLeadingTrimFunction()`	Resolve the function definition which should be used to trim the specified character from the beginning (leading) of the trim source.
`protected SQLFunction`	`resolveTrailingSpaceTrimFunction()`	Resolve the function definition which should be used to trim trailing spaces.
`protected SQLFunction`	`resolveTrailingTrimFunction()`	Resolve the function definition which should be used to trim the specified character from the end (trailing) of the trim source.

从类继承的方法 org.hibernate.dialect.function.AbstractAnsiTrimEmulationFunction
getReturnType, hasArguments, hasParenthesesIfNoArguments, render

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - LTRIM
```
public static final String LTRIM
```
    The default ltrim function name
    
    另请参阅:
    
    常量字段值
  - RTRIM
```
public static final String RTRIM
```
    The default rtrim function name
    
    另请参阅:
    
    常量字段值
  - REPLACE
```
public static final String REPLACE
```
    The default replace function name
    
    另请参阅:
    
    常量字段值
  - SPACE_PLACEHOLDER
```
public static final String SPACE_PLACEHOLDER
```
    The placeholder used to represent whitespace
    
    另请参阅:
    
    常量字段值
  - LEADING_SPACE_TRIM_TEMPLATE
```
public static final String LEADING_SPACE_TRIM_TEMPLATE
```
    The SQLFunctionTemplate pattern for the trimming leading spaces
    
    另请参阅:
    
    常量字段值
  - TRAILING_SPACE_TRIM_TEMPLATE
```
public static final String TRAILING_SPACE_TRIM_TEMPLATE
```
    The SQLFunctionTemplate pattern for the trimming trailing spaces
    
    另请参阅:
    
    常量字段值
  - BOTH_SPACE_TRIM_TEMPLATE
```
public static final String BOTH_SPACE_TRIM_TEMPLATE
```
    The SQLFunctionTemplate pattern for the trimming both leading and trailing spaces
    
    另请参阅:
    
    常量字段值
  - BOTH_SPACE_TRIM_FROM_TEMPLATE
```
public static final String BOTH_SPACE_TRIM_FROM_TEMPLATE
```
    The SQLFunctionTemplate pattern for the trimming both leading and trailing spaces, with the optional FROM keyword. Different because we need to skip the FROM keyword in the SQLFunctionTemplate processing
    
    另请参阅:
    
    常量字段值
  - LEADING_TRIM_TEMPLATE
```
public static final String LEADING_TRIM_TEMPLATE
```
    A template for the series of calls required to trim non-space chars from the beginning of text.
    NOTE : essentially we:
    
    replace all space chars with the text '${space}$'
    
    replace all the actual replacement chars with space chars
    
    perform left-trimming (that removes any of the space chars we just added which occur at the beginning of the text)
    
    replace all space chars with the replacement char
    
    replace all the '${space}$' text with space chars
    另请参阅:
    
    常量字段值
  - TRAILING_TRIM_TEMPLATE
```
public static final String TRAILING_TRIM_TEMPLATE
```
    A template for the series of calls required to trim non-space chars from the end of text.
    NOTE: essentially the same series of calls as outlined in LEADING_TRIM_TEMPLATE except that here, instead of left-trimming the added spaces, we right-trim them to remove them from the end of the text.
    
    另请参阅:
    
    常量字段值
  - BOTH_TRIM_TEMPLATE
```
public static final String BOTH_TRIM_TEMPLATE
```
    A template for the series of calls required to trim non-space chars from both the beginning and the end of text.
    NOTE: again, we have a series of calls that is essentially the same as outlined in LEADING_TRIM_TEMPLATE except that here we perform both left (leading) and right (trailing) trimming.
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - AnsiTrimEmulationFunction
```
public AnsiTrimEmulationFunction()
```
    Constructs a new AnsiTrimEmulationFunction using LTRIM, RTRIM, and REPLACE respectively.
    
    另请参阅:
    
    AnsiTrimEmulationFunction(String,String,String)
  - AnsiTrimEmulationFunction
```
public AnsiTrimEmulationFunction(String ltrimFunctionName,
                                 String rtrimFunctionName,
                                 String replaceFunctionName)
```
    Constructs a trim() emulation function definition using the specified function calls.
    
    参数:
    
    ltrimFunctionName - The left trim function to use.
    
    rtrimFunctionName - The right trim function to use.
    
    replaceFunctionName - The replace function to use.
- 方法详细资料
  - resolveBothSpaceTrimFunction
```
protected SQLFunction resolveBothSpaceTrimFunction()
```
    Resolve the function definition which should be used to trim both leading and trailing spaces.
    In this form, the input arguments is missing the FROM keyword.
    
    指定者:
    
    resolveBothSpaceTrimFunction 在类中 AbstractAnsiTrimEmulationFunction
    
    返回:
    
    The sql function
  - resolveBothSpaceTrimFromFunction
```
protected SQLFunction resolveBothSpaceTrimFromFunction()
```
    Resolve the function definition which should be used to trim both leading and trailing spaces.
    The same as {#link resolveBothSpaceTrimFunction} except that here theFROM is included and will need to be accounted for during SQLFunction.render(org.hibernate.type.Type, java.util.List, org.hibernate.engine.spi.SessionFactoryImplementor) processing.
    
    指定者:
    
    resolveBothSpaceTrimFromFunction 在类中 AbstractAnsiTrimEmulationFunction
    
    返回:
    
    The sql function
  - resolveLeadingSpaceTrimFunction
```
protected SQLFunction resolveLeadingSpaceTrimFunction()
```
    Resolve the function definition which should be used to trim leading spaces.
    
    指定者:
    
    resolveLeadingSpaceTrimFunction 在类中 AbstractAnsiTrimEmulationFunction
    
    返回:
    
    The sql function
  - resolveTrailingSpaceTrimFunction
```
protected SQLFunction resolveTrailingSpaceTrimFunction()
```
    Resolve the function definition which should be used to trim trailing spaces.
    
    指定者:
    
    resolveTrailingSpaceTrimFunction 在类中 AbstractAnsiTrimEmulationFunction
    
    返回:
    
    The sql function
  - resolveBothTrimFunction
```
protected SQLFunction resolveBothTrimFunction()
```
    Resolve the function definition which should be used to trim the specified character from both the beginning (leading) and end (trailing) of the trim source.
    
    指定者:
    
    resolveBothTrimFunction 在类中 AbstractAnsiTrimEmulationFunction
    
    返回:
    
    The sql function
  - resolveLeadingTrimFunction
```
protected SQLFunction resolveLeadingTrimFunction()
```
    Resolve the function definition which should be used to trim the specified character from the beginning (leading) of the trim source.
    
    指定者:
    
    resolveLeadingTrimFunction 在类中 AbstractAnsiTrimEmulationFunction
    
    返回:
    
    The sql function
  - resolveTrailingTrimFunction
```
protected SQLFunction resolveTrailingTrimFunction()
```
    Resolve the function definition which should be used to trim the specified character from the end (trailing) of the trim source.
    
    指定者:
    
    resolveTrailingTrimFunction 在类中 AbstractAnsiTrimEmulationFunction
    
    返回:
    
    The sql function

类 AnsiTrimEmulationFunction

字段概要

构造器概要

方法概要

从类继承的方法 org.hibernate.dialect.function.AbstractAnsiTrimEmulationFunction

从类继承的方法 java.lang.Object

字段详细资料

LTRIM

RTRIM

REPLACE

SPACE_PLACEHOLDER

LEADING_SPACE_TRIM_TEMPLATE

TRAILING_SPACE_TRIM_TEMPLATE

BOTH_SPACE_TRIM_TEMPLATE

BOTH_SPACE_TRIM_FROM_TEMPLATE

LEADING_TRIM_TEMPLATE

TRAILING_TRIM_TEMPLATE

BOTH_TRIM_TEMPLATE

构造器详细资料

AnsiTrimEmulationFunction

AnsiTrimEmulationFunction

方法详细资料

resolveBothSpaceTrimFunction

resolveBothSpaceTrimFromFunction

resolveLeadingSpaceTrimFunction

resolveTrailingSpaceTrimFunction

resolveBothTrimFunction

resolveLeadingTrimFunction

resolveTrailingTrimFunction