DataAccessNode (Closure Templates)

java.lang.Object
- com.google.template.soy.basetree.AbstractNode
- - com.google.template.soy.exprtree.AbstractExprNode
  - - com.google.template.soy.exprtree.AbstractParentExprNode
    - - com.google.template.soy.exprtree.DataAccessNode

All Implemented Interfaces:

Node, ParentNode<ExprNode>, ExprNode, ExprNode.ParentExprNode

Direct Known Subclasses:

FieldAccessNode, ItemAccessNode
```
public abstract class DataAccessNode
extends AbstractParentExprNode
```
Base class which represents access to a field or element of an aggregate value, such as an object or collection. Syntactically, data accesses are always suffix operators such as base.fieldName or base[expression].

Nested Class Summary
- Nested classes/interfaces inherited from interface com.google.template.soy.exprtree.ExprNode
  ExprNode.ConstantNode, ExprNode.Kind, ExprNode.OperatorNode, ExprNode.ParentExprNode, ExprNode.PrimitiveNode

Field Summary

Fields
Modifier and Type Field and Description

protected boolean isNullSafe
- Fields inherited from class com.google.template.soy.basetree.AbstractNode
  SPACES

Fields
Modifier and Type	Field and Description
`protected boolean`	`isNullSafe`

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`DataAccessNode(DataAccessNode orig, CopyState copyState)`
`protected`	`DataAccessNode(ExprNode base, SourceLocation sourceLocation, boolean isNullSafe)`

Method Summary

Methods
Modifier and Type	Method and Description
`ExprNode`	`getBaseExprChild()` Returns the base expression from which we're looking up the named field.
`abstract String`	`getSourceStringSuffix()` Returns the source string for the part of the expression that accesses the item - in other words, not including the base expression.
`boolean`	`isNullSafe()` Returns whether this field reference is null-safe.
`String`	`toSourceString()` Builds a Soy source string that could be the source for this node.

Methods inherited from class com.google.template.soy.exprtree.AbstractParentExprNode
addChild, addChild, addChildren, addChildren, appendSourceStringForChildren, clearChildren, getChild, getChildIndex, getChildren, getType, numChildren, removeChild, removeChild, replaceChild, replaceChild, setType

Methods inherited from class com.google.template.soy.exprtree.AbstractExprNode
getParent, getSourceLocation

Methods inherited from class com.google.template.soy.basetree.AbstractNode
couldHaveSyntaxVersionAtLeast, equals, getNearestAncestor, getSyntaxVersionUpperBound, hasAncestor, hashCode, maybeSetSyntaxVersionUpperBound, setParent, toString

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

Methods inherited from interface com.google.template.soy.exprtree.ExprNode
copy, getKind, getParent

Methods inherited from interface com.google.template.soy.basetree.Node
couldHaveSyntaxVersionAtLeast, getNearestAncestor, getSourceLocation, getSyntaxVersionUpperBound, hasAncestor, maybeSetSyntaxVersionUpperBound, setParent

- Field Detail
  - isNullSafe
```
protected final boolean isNullSafe
```
- Constructor Detail
  - DataAccessNode
```
protected DataAccessNode(ExprNode base,
              SourceLocation sourceLocation,
              boolean isNullSafe)
```
    Parameters:
    base - The base expression, that is a reference to the object containing the named field.
    sourceLocation - The node's source location.
    isNullSafe - If true, checks during evaluation whether the base expression is null and returns null instead of causing an invalid dereference.
  - DataAccessNode
```
protected DataAccessNode(DataAccessNode orig,
              CopyState copyState)
```
- Method Detail
  - getBaseExprChild
```
public ExprNode getBaseExprChild()
```
    Returns the base expression from which we're looking up the named field.
  - isNullSafe
```
public boolean isNullSafe()
```
    Returns whether this field reference is null-safe.
  - getSourceStringSuffix
```
public abstract String getSourceStringSuffix()
```
    Returns the source string for the part of the expression that accesses the item - in other words, not including the base expression. This is intended for use in reporting errors.
  - toSourceString
```
public String toSourceString()
```
    Description copied from interface: Node
    
    Builds a Soy source string that could be the source for this node. Note that this is not the actual original source string, but a (SORT OF, NOT QUITE) canonical equivalent. Note: Some nodes do not have a direct mapping to Soy source (such as nodes created during some optimization passes). Thus this method may not always be supported.
    
    Returns:
    A Soy string that could be the source for this node.

Class DataAccessNode

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.template.soy.exprtree.ExprNode

Field Summary

Fields inherited from class com.google.template.soy.basetree.AbstractNode

Constructor Summary

Method Summary

Methods inherited from class com.google.template.soy.exprtree.AbstractParentExprNode

Methods inherited from class com.google.template.soy.exprtree.AbstractExprNode

Methods inherited from class com.google.template.soy.basetree.AbstractNode

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.template.soy.exprtree.ExprNode

Methods inherited from interface com.google.template.soy.basetree.Node

Field Detail

isNullSafe

Constructor Detail

DataAccessNode

DataAccessNode

Method Detail

getBaseExprChild

isNullSafe

getSourceStringSuffix

toSourceString