SqlWhereVisitor (Groovy 6.0.0-alpha-1)

groovy.sql.SqlWhereVisitor

```
public class SqlWhereVisitor
extends CodeVisitorSupport
```
AST visitor used by DataSet to derive an SQL WHERE clause and positional parameter list from a supported filter closure.

Methods Summary

Methods
Type Params	Return Type	Name and description
	`public List<Object>`	`getParameters()` Returns the positional parameters collected while building the SQL fragment.
	`public String`	`getWhere()` Returns the SQL `WHERE` fragment built so far.
	`public void`	`setClosure(Closure<?> closure)` Supplies the closure whose captured variables may be referenced while the SQL fragment is being derived.
	`protected String`	`tokenAsSql(Token token)` Maps a Groovy AST token to its SQL operator representation.
	`public void`	`visitBinaryExpression(BinaryExpression expression)` Visits a binary expression and renders it as SQL, collecting any literal values as parameters.
	`public void`	`visitBooleanExpression(BooleanExpression expression)` Visits the wrapped boolean expression.
	`public void`	`visitConstantExpression(ConstantExpression expression)` Adds a constant value as a positional parameter.
	`public void`	`visitPropertyExpression(PropertyExpression expression)` Appends a property reference as a column name.
	`public void`	`visitReturnStatement(ReturnStatement statement)` Visits the closure return expression that defines the filter.
	`public void`	`visitVariableExpression(VariableExpression expression)` Resolves a variable captured from the enclosing closure scope and adds it as a positional parameter.

Inherited Methods Summary

Inherited Methods
Methods inherited from class	Name
`class CodeVisitorSupport`	afterSwitchCaseStatementsVisited, afterSwitchConditionExpressionVisited, visitArgumentlistExpression, visitArrayExpression, visitAssertStatement, visitAttributeExpression, visitBinaryExpression, visitBitwiseNegationExpression, visitBlockStatement, visitBooleanExpression, visitBreakStatement, visitBytecodeExpression, visitCaseStatement, visitCastExpression, visitCatchStatement, visitClassExpression, visitClosureExpression, visitClosureListExpression, visitConstantExpression, visitConstructorCallExpression, visitContinueStatement, visitDeclarationExpression, visitDoWhileLoop, visitEmptyStatement, visitExpressionStatement, visitFieldExpression, visitForLoop, visitGStringExpression, visitIfElse, visitLambdaExpression, visitListExpression, visitMapEntryExpression, visitMapExpression, visitMethodCallExpression, visitMethodPointerExpression, visitMethodReferenceExpression, visitNotExpression, visitPostfixExpression, visitPrefixExpression, visitPropertyExpression, visitRangeExpression, visitReturnStatement, visitShortTernaryExpression, visitSpreadExpression, visitSpreadMapExpression, visitStaticMethodCallExpression, visitSwitch, visitSynchronizedStatement, visitTernaryExpression, visitThrowStatement, visitTryCatchFinally, visitTupleExpression, visitUnaryMinusExpression, visitUnaryPlusExpression, visitVariableExpression, visitWhileLoop

- Method Detail
  - public List<Object> getParameters()
    
    Returns the positional parameters collected while building the SQL fragment.
    Returns:
    the collected parameter values
  - public String getWhere()
    
    Returns the SQL WHERE fragment built so far.
    Returns:
    the derived where fragment
  - public void setClosure(Closure<?> closure)
    
    Supplies the closure whose captured variables may be referenced while the SQL fragment is being derived.
    Parameters:
    closure - the closure currently being translated
    Since:
    6.0.0
  - protected String tokenAsSql(Token token)
    
    Maps a Groovy AST token to its SQL operator representation.
    Parameters:
    token - the AST token to translate
    Returns:
    the SQL operator text
  - public void visitBinaryExpression(BinaryExpression expression)
    
    Visits a binary expression and renders it as SQL, collecting any literal values as parameters.
    Parameters:
    expression - the binary expression to visit
  - public void visitBooleanExpression(BooleanExpression expression)
    
    Visits the wrapped boolean expression.
    Parameters:
    expression - the boolean expression to visit
  - public void visitConstantExpression(ConstantExpression expression)
    
    Adds a constant value as a positional parameter.
    Parameters:
    expression - the constant expression to visit
  - public void visitPropertyExpression(PropertyExpression expression)
    
    Appends a property reference as a column name.
    Parameters:
    expression - the property expression to visit
  - public void visitReturnStatement(ReturnStatement statement)
    
    Visits the closure return expression that defines the filter.
    Parameters:
    statement - the return statement to visit
  - public void visitVariableExpression(VariableExpression expression)
    
    Resolves a variable captured from the enclosing closure scope and adds it as a positional parameter.
    Parameters:
    expression - the variable expression to visit

Summary:
Method

| Detail:
Method

[Java] Class SqlWhereVisitor

Methods Summary

Inherited Methods Summary

Method Detail

public List<Object> getParameters()

public String getWhere()

public void setClosure(Closure<?> closure)

protected String tokenAsSql(Token token)

public void visitBinaryExpression(BinaryExpression expression)

public void visitBooleanExpression(BooleanExpression expression)

public void visitConstantExpression(ConstantExpression expression)

public void visitPropertyExpression(PropertyExpression expression)

public void visitReturnStatement(ReturnStatement statement)

public void visitVariableExpression(VariableExpression expression)