java.lang.Object
- org.springframework.expression.spel.SpelParserConfiguration

```
public class SpelParserConfiguration
extends Object
```
Configuration object for the SpEL expression parser.
Since:
3.0
Author:
Juergen Hoeller, Phillip Webb, Andy Clement
See Also:
SpelExpressionParser(SpelParserConfiguration)

Constructor Summary

Constructors
Constructor	Description
`SpelParserConfiguration()`	Create a new `SpelParserConfiguration` instance with default settings.
`SpelParserConfiguration(boolean autoGrowNullReferences, boolean autoGrowCollections)`	Create a new `SpelParserConfiguration` instance.
`SpelParserConfiguration(boolean autoGrowNullReferences, boolean autoGrowCollections, int maximumAutoGrowSize)`	Create a new `SpelParserConfiguration` instance.
`SpelParserConfiguration(SpelCompilerMode compilerMode, ClassLoader compilerClassLoader)`	Create a new `SpelParserConfiguration` instance.
`SpelParserConfiguration(SpelCompilerMode compilerMode, ClassLoader compilerClassLoader, boolean autoGrowNullReferences, boolean autoGrowCollections, int maximumAutoGrowSize)`	Create a new `SpelParserConfiguration` instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ClassLoader`	`getCompilerClassLoader()`	Return the ClassLoader to use as the basis for expression compilation.
`SpelCompilerMode`	`getCompilerMode()`	Return the configuration mode for parsers using this configuration object.
`int`	`getMaximumAutoGrowSize()`	Return the maximum size that a collection can auto grow.
`boolean`	`isAutoGrowCollections()`	Return `true` if collections should be automatically grown.
`boolean`	`isAutoGrowNullReferences()`	Return `true` if `null` references should be automatically grown.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SpelParserConfiguration
```
public SpelParserConfiguration()
```
    Create a new SpelParserConfiguration instance with default settings.
  - SpelParserConfiguration
```
public SpelParserConfiguration(@Nullable
                               SpelCompilerMode compilerMode,
                               @Nullable
                               ClassLoader compilerClassLoader)
```
    Create a new SpelParserConfiguration instance.
    Parameters:
    compilerMode - the compiler mode for the parser
    compilerClassLoader - the ClassLoader to use as the basis for expression compilation
  - SpelParserConfiguration
```
public SpelParserConfiguration(boolean autoGrowNullReferences,
                               boolean autoGrowCollections)
```
    Create a new SpelParserConfiguration instance.
    Parameters:
    autoGrowNullReferences - if null references should automatically grow
    autoGrowCollections - if collections should automatically grow
    See Also:
    SpelParserConfiguration(boolean, boolean, int)
  - SpelParserConfiguration
```
public SpelParserConfiguration(boolean autoGrowNullReferences,
                               boolean autoGrowCollections,
                               int maximumAutoGrowSize)
```
    Create a new SpelParserConfiguration instance.
    Parameters:
    autoGrowNullReferences - if null references should automatically grow
    autoGrowCollections - if collections should automatically grow
    maximumAutoGrowSize - the maximum size that the collection can auto grow
  - SpelParserConfiguration
```
public SpelParserConfiguration(@Nullable
                               SpelCompilerMode compilerMode,
                               @Nullable
                               ClassLoader compilerClassLoader,
                               boolean autoGrowNullReferences,
                               boolean autoGrowCollections,
                               int maximumAutoGrowSize)
```
    Create a new SpelParserConfiguration instance.
    Parameters:
    compilerMode - the compiler mode that parsers using this configuration object should use
    compilerClassLoader - the ClassLoader to use as the basis for expression compilation
    autoGrowNullReferences - if null references should automatically grow
    autoGrowCollections - if collections should automatically grow
    maximumAutoGrowSize - the maximum size that the collection can auto grow
- Method Detail
  - getCompilerMode
```
public SpelCompilerMode getCompilerMode()
```
    Return the configuration mode for parsers using this configuration object.
  - getCompilerClassLoader
```
@Nullable
public ClassLoader getCompilerClassLoader()
```
    Return the ClassLoader to use as the basis for expression compilation.
  - isAutoGrowNullReferences
```
public boolean isAutoGrowNullReferences()
```
    Return true if null references should be automatically grown.
  - isAutoGrowCollections
```
public boolean isAutoGrowCollections()
```
    Return true if collections should be automatically grown.
  - getMaximumAutoGrowSize
```
public int getMaximumAutoGrowSize()
```
    Return the maximum size that a collection can auto grow.

Class SpelParserConfiguration

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SpelParserConfiguration

SpelParserConfiguration

SpelParserConfiguration

SpelParserConfiguration

SpelParserConfiguration

Method Detail

getCompilerMode

getCompilerClassLoader

isAutoGrowNullReferences

isAutoGrowCollections

getMaximumAutoGrowSize