Package org.apache.cayenne.exp.parser

# Class ASTEqual

java.lang.Object
org.apache.cayenne.exp.Expression
org.apache.cayenne.exp.parser.SimpleNode
org.apache.cayenne.exp.parser.ConditionNode
org.apache.cayenne.exp.parser.ASTEqual

All Implemented Interfaces:
  `Serializable`, `Node`, `ValueInjector`, `XMLSerializable`

public class ASTEqual extends ConditionNode implements ValueInjector
"Equal To" expression.

Since:
  1.1
See Also:
  - Serialized Form

- ## Field Summary

  ### Fields inherited from class org.apache.cayenne.exp.parser.SimpleNode

  `children, id, parent`

  ### Fields inherited from class org.apache.cayenne.exp.Expression

  `ADD, AND, ASTERISK, BETWEEN, BITWISE_AND, BITWISE_LEFT_SHIFT, BITWISE_NOT, BITWISE_OR, BITWISE_RIGHT_SHIFT, BITWISE_XOR, CUSTOM_OP, DB_PATH, DBID_PATH, DIVIDE, ENCLOSING_OBJECT, EQUAL_TO, EXISTS, FALSE, FULL_OBJECT, FUNCTION_CALL, GREATER_THAN, GREATER_THAN_EQUAL_TO, IN, LESS_THAN, LESS_THAN_EQUAL_TO, LIKE, LIKE_IGNORE_CASE, LIST, MULTIPLY, NEGATIVE, NOT, NOT_BETWEEN, NOT_EQUAL_TO, NOT_EXISTS, NOT_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, PRUNED_NODE, SUBQUERY, SUBTRACT, TRUE, type`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ASTEqual()`
  `ASTEqual(SimpleNode path, Object value)`
  Creates "Equal To" expression.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `protected Boolean`
  `evaluateSubNode(Object o, Object[] evaluatedChildren)`
  `protected String`
  `getEJBQLExpressionOperator(int index)`
  Returns operator for EJBQL statements, which can differ for Cayenne expression operator
  `protected String`
  `getExpressionOperator(int index)`
  `protected int`
  `getRequiredChildrenCount()`
  `int`
  `getType()`
  Returns a type of expression.
  `void`
  `injectValue(Object o)`
  `Expression`
  `shallowCopy()`
  Creates a copy of this expression node, without copying children.

  ### Methods inherited from class org.apache.cayenne.exp.parser.ConditionNode

  `evaluateNode, jjtSetParent`

  ### Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode

  `appendAsEJBQL, appendAsEJBQL, appendAsEscapedString, appendAsString, appendChildrenAsEJBQL, appendScalarAsString, connectChildren, encodeScalarAsEJBQL, evaluate, evaluateChild, expName, flattenTree, getOperand, getOperandCount, getPathAliases, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, notExp, pruneNodeForPrunedChild, setOperand, unwrapChild, wrapChild`

  ### Methods inherited from class org.apache.cayenne.exp.Expression

  `andExp, andExp, deepCopy, encodeAsXML, equals, filter, filterObjects, first, hashCode, joinExp, joinExp, match, orExp, orExp, params, params, paramsArray, setType, toEJBQL, toEJBQL, toString, transform, transformExpression, traverse, traverse`

  ### Methods inherited from class java.lang.Object

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

- ## Constructor Details

  - ### ASTEqual

    public ASTEqual()

  - ### ASTEqual

    public ASTEqual(SimpleNode path, Object value)
    Creates "Equal To" expression.

- ## Method Details

  - ### getRequiredChildrenCount

    protected int getRequiredChildrenCount()
    Specified by:
      `getRequiredChildrenCount` in class `ConditionNode`

  - ### evaluateSubNode

    protected Boolean evaluateSubNode(Object o, Object[] evaluatedChildren) throws Exception
    Specified by:
      `evaluateSubNode` in class `ConditionNode`
    Throws:
      `Exception`

  - ### shallowCopy

    public Expression shallowCopy()
    Creates a copy of this expression node, without copying children.
    Specified by:
      `shallowCopy` in class `Expression`

  - ### getExpressionOperator

    protected String getExpressionOperator(int index)
    Specified by:
      `getExpressionOperator` in class `SimpleNode`

  - ### getEJBQLExpressionOperator

    protected String getEJBQLExpressionOperator(int index)
    Description copied from class: `SimpleNode`
    Returns operator for EJBQL statements, which can differ for Cayenne expression operator
    Overrides:
      `getEJBQLExpressionOperator` in class `SimpleNode`

  - ### getType

    public int getType()
    Description copied from class: `Expression`
    Returns a type of expression. Most common types are defined as public static fields of this interface.
    Overrides:
      `getType` in class `Expression`

  - ### injectValue

    public void injectValue(Object o)
    Specified by:
      `injectValue` in interface `ValueInjector`