Package software.amazon.smithy.jmespath.ast

Class IndexExpression

java.lang.Object

software.amazon.smithy.jmespath.JmespathExpression

software.amazon.smithy.jmespath.ast.IndexExpression

public final class IndexExpression
extends JmespathExpression

Gets a specific element by zero-based index.

Use a negative index to get an element from the end of the array (e.g., -1 is used to get the last element of the array). If an array element does not exist, a null value is returned.

See Also:

• Index Expressions

Constructor Summary

Constructors

Constructor	Description
IndexExpression(int index)
IndexExpression(int index, int line, int column)

Method Summary

Modifier and Type	Method	Description
<T> T	accept(ExpressionVisitor<T> visitor)	Visits a node using a double-dispatch visitor.
boolean	equals(Object o)
int	getIndex()	Gets the index to retrieve.
int	hashCode()
String	toString()

Methods inherited from class software.amazon.smithy.jmespath.JmespathExpression

getColumn, getLine, lint, lint, parse

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

IndexExpression

public IndexExpression(int index)

IndexExpression

public IndexExpression(int index,
 int line,
 int column)

Method Details

accept

public <T> T accept(ExpressionVisitor<T> visitor)

Description copied from class: JmespathExpression

Visits a node using a double-dispatch visitor.

Specified by:

accept in class JmespathExpression

Type Parameters:

T - Type of value the visitor returns.

Parameters:

visitor - Visitor to accept on the node.

Returns:

Returns the result of applying the visitor.

getIndex

public int getIndex()

Gets the index to retrieve.

Returns:

Returns the index.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object