SqlValidator.Config (Apache Calcite API)

Enclosing interface:

SqlValidator
```
@Value.Immutable(singleton=false)
public static interface SqlValidator.Config
```
Interface to define the configuration for a SqlValidator. Provides methods to set each configuration option.

Field Summary

Fields
Modifier and Type Field and Description

static SqlValidator.Config DEFAULT
Default configuration.

Fields
Modifier and Type	Field and Description
`static SqlValidator.Config`	`DEFAULT` Default configuration.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods Deprecated Methods
Modifier and Type	Method and Description
`default boolean`	`callRewrite()` Returns whether to enable rewrite of "macro-like" calls such as COALESCE.
`default boolean`	`columnReferenceExpansion()` Returns whether column reference expansion is enabled.
`default SqlConformance`	`conformance()` Returns the dialect of SQL (SQL:2003, etc.) this validator recognizes.
`default NullCollation`	`defaultNullCollation()` Returns how NULL values should be collated if an ORDER BY item does not contain NULLS FIRST or NULLS LAST.
`default boolean`	`identifierExpansion()` Returns whether to expand identifiers other than column references.
`default boolean`	`lenientOperatorLookup()` Returns whether this validator should be lenient upon encountering an unknown function, default false.
`default SqlConformance`	`sqlConformance()` Deprecated. Use `conformance()`
`default boolean`	`typeCoercionEnabled()` Returns whether the validator supports implicit type coercion.
`TypeCoercionFactory`	`typeCoercionFactory()` Returns the type coercion factory.
`@Nullable SqlTypeCoercionRule`	`typeCoercionRules()` Returns the type coercion rules for explicit type coercion.
`SqlValidator.Config`	`withCallRewrite(boolean rewrite)` Sets whether to enable rewrite of "macro-like" calls such as COALESCE.
`SqlValidator.Config`	`withColumnReferenceExpansion(boolean expand)` Sets whether to enable expansion of column references.
`SqlValidator.Config`	`withConformance(SqlConformance conformance)` Sets the SQL conformance of the validator.
`SqlValidator.Config`	`withDefaultNullCollation(NullCollation nullCollation)` Sets how NULL values should be collated if an ORDER BY item does not contain NULLS FIRST or NULLS LAST.
`SqlValidator.Config`	`withIdentifierExpansion(boolean expand)` Sets whether to enable expansion of identifiers other than column references.
`SqlValidator.Config`	`withLenientOperatorLookup(boolean lenient)` Sets whether this validator should be lenient upon encountering an unknown function.
`default SqlValidator.Config`	`withSqlConformance(SqlConformance conformance)` Deprecated. Use `conformance()`
`SqlValidator.Config`	`withTypeCoercionEnabled(boolean enabled)` Sets whether to enable implicit type coercion for validation, default true.
`SqlValidator.Config`	`withTypeCoercionFactory(TypeCoercionFactory factory)` Sets a factory to create type coercion instance that overrides the default coercion rules defined in `TypeCoercionImpl`.
`SqlValidator.Config`	`withTypeCoercionRules(@Nullable SqlTypeCoercionRule rules)` Sets the `SqlTypeCoercionRule` instance which defines the type conversion matrix for the explicit type coercion.

- Field Detail
  - DEFAULT
```
static final SqlValidator.Config DEFAULT
```
    Default configuration.
- Method Detail
  - callRewrite
```
@Value.Default
default boolean callRewrite()
```
    Returns whether to enable rewrite of "macro-like" calls such as COALESCE.
  - withCallRewrite
```
SqlValidator.Config withCallRewrite(boolean rewrite)
```
    Sets whether to enable rewrite of "macro-like" calls such as COALESCE.
  - defaultNullCollation
```
@Value.Default
default NullCollation defaultNullCollation()
```
    Returns how NULL values should be collated if an ORDER BY item does not contain NULLS FIRST or NULLS LAST.
  - withDefaultNullCollation
```
SqlValidator.Config withDefaultNullCollation(NullCollation nullCollation)
```
    Sets how NULL values should be collated if an ORDER BY item does not contain NULLS FIRST or NULLS LAST.
  - columnReferenceExpansion
```
@Value.Default
default boolean columnReferenceExpansion()
```
    Returns whether column reference expansion is enabled.
  - withColumnReferenceExpansion
```
SqlValidator.Config withColumnReferenceExpansion(boolean expand)
```
    Sets whether to enable expansion of column references. (Currently this does not apply to the ORDER BY clause; may be fixed in the future.)
  - identifierExpansion
```
@Value.Default
default boolean identifierExpansion()
```
    Returns whether to expand identifiers other than column references.
    REVIEW jvs 30-June-2006: subclasses may override shouldExpandIdentifiers in a way that ignores this; we should probably get rid of the protected method and always use this variable (or better, move preferences like this to a separate "parameter" class).
  - withIdentifierExpansion
```
SqlValidator.Config withIdentifierExpansion(boolean expand)
```
    Sets whether to enable expansion of identifiers other than column references.
  - lenientOperatorLookup
```
@Value.Default
default boolean lenientOperatorLookup()
```
    Returns whether this validator should be lenient upon encountering an unknown function, default false.
    If true, if a statement contains a call to a function that is not present in the operator table, or if the call does not have the required number or types of operands, the validator nevertheless regards the statement as valid. The type of the function call will be UNKNOWN.
    If false (the default behavior), an unknown function call causes a validation error to be thrown.
  - withLenientOperatorLookup
```
SqlValidator.Config withLenientOperatorLookup(boolean lenient)
```
    Sets whether this validator should be lenient upon encountering an unknown function.
    
    Parameters:
    
    lenient - Whether to be lenient when encountering an unknown function
  - typeCoercionEnabled
```
@Value.Default
default boolean typeCoercionEnabled()
```
    Returns whether the validator supports implicit type coercion.
  - withTypeCoercionEnabled
```
SqlValidator.Config withTypeCoercionEnabled(boolean enabled)
```
    Sets whether to enable implicit type coercion for validation, default true.
    
    See Also:
    
    TypeCoercionImpl
  - typeCoercionFactory
```
TypeCoercionFactory typeCoercionFactory()
```
    Returns the type coercion factory.
  - withTypeCoercionFactory
```
SqlValidator.Config withTypeCoercionFactory(TypeCoercionFactory factory)
```
    Sets a factory to create type coercion instance that overrides the default coercion rules defined in TypeCoercionImpl.
    
    Parameters:
    
    factory - Factory to create TypeCoercion instance
  - typeCoercionRules
```
@Nullable SqlTypeCoercionRule typeCoercionRules()
```
    Returns the type coercion rules for explicit type coercion.
  - withTypeCoercionRules
```
SqlValidator.Config withTypeCoercionRules(@Nullable SqlTypeCoercionRule rules)
```
    Sets the SqlTypeCoercionRule instance which defines the type conversion matrix for the explicit type coercion.
    The rules setting should be thread safe. In the default implementation, it is set to a ThreadLocal variable.
    
    Parameters:
    
    rules - The SqlTypeCoercionRule instance, see its documentation for how to customize the rules
  - conformance
```
@Value.Default
default SqlConformance conformance()
```
    Returns the dialect of SQL (SQL:2003, etc.) this validator recognizes. Default is SqlConformanceEnum.DEFAULT.
  - sqlConformance
```
@Deprecated
default SqlConformance sqlConformance()
```
    Deprecated. Use conformance()
    
    Returns the SQL conformance.
  - withConformance
```
SqlValidator.Config withConformance(SqlConformance conformance)
```
    Sets the SQL conformance of the validator.
  - withSqlConformance
```
@Deprecated
default SqlValidator.Config withSqlConformance(SqlConformance conformance)
```
    Deprecated. Use conformance()
    
    Sets the SQL conformance of the validator.

Interface SqlValidator.Config

Field Summary

Method Summary

Field Detail

DEFAULT

Method Detail

callRewrite

withCallRewrite

defaultNullCollation

withDefaultNullCollation

columnReferenceExpansion

withColumnReferenceExpansion

identifierExpansion

withIdentifierExpansion

lenientOperatorLookup

withLenientOperatorLookup

typeCoercionEnabled

withTypeCoercionEnabled

typeCoercionFactory

withTypeCoercionFactory

typeCoercionRules

withTypeCoercionRules

conformance

sqlConformance

withConformance

withSqlConformance