Package org.apache.cayenne.exp.parser

Class ASTFunctionCall

java.lang.Object

org.apache.cayenne.exp.Expression

org.apache.cayenne.exp.parser.SimpleNode

org.apache.cayenne.exp.parser.EvaluatedNode

org.apache.cayenne.exp.parser.ASTFunctionCall

All Implemented Interfaces:

Serializable, Node, XMLSerializable

Direct Known Subclasses:

ASTAbs, ASTAggregateFunctionCall, ASTConcat, ASTCurrentDate, ASTCurrentTime, ASTCurrentTimestamp, ASTCustomFunction, ASTExtract, ASTLength, ASTLocate, ASTLower, ASTMod, ASTSqrt, ASTSubstring, ASTTrim, ASTUpper

public abstract class ASTFunctionCall
extends EvaluatedNode

Since:

4.0

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	functionName

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
ASTFunctionCall(int id, String functionName, Object... nodes)

Method Summary

Modifier and Type	Method	Description
void	appendAsEJBQL(List<Object> parameterAccumulator, Appendable out, String rootId)	Stores a String representation of Expression as EJBQL using a provided PrintWriter.
void	appendAsString(Appendable out)	Appends own content as a String to the provided Appendable.
protected void	appendFunctionNameAsString(Appendable out)
boolean	equals(Object o)
protected String	getExpressionOperator(int index)
String	getFunctionName()
int	getType()	Returns a type of expression.
int	hashCode()
protected static String	nameToCamelCase(String functionName)
boolean	needParenthesis()
protected void	setFunctionName(String functionName)

Methods inherited from class org.apache.cayenne.exp.parser.EvaluatedNode

evaluateNode, evaluateSubNode, getRequiredChildrenCount

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

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

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

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

Methods inherited from class java.lang.Object

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

Field Details

functionName

protected String functionName

Constructor Details

ASTFunctionCall

public ASTFunctionCall(int id,
 String functionName,
 Object... nodes)

Method Details

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

needParenthesis

public boolean needParenthesis()

getFunctionName

public String getFunctionName()

setFunctionName

protected void setFunctionName(String functionName)

getExpressionOperator

protected String getExpressionOperator(int index)

Specified by:

getExpressionOperator in class SimpleNode

equals

public boolean equals(Object o)

Overrides:

equals in class Expression

hashCode

public int hashCode()

Overrides:

hashCode in class Expression

appendFunctionNameAsString

protected void appendFunctionNameAsString(Appendable out)
                                   throws IOException

Throws:

IOException

appendAsString

public void appendAsString(Appendable out)
                    throws IOException

Description copied from class: Expression

Appends own content as a String to the provided Appendable.

Overrides:

appendAsString in class SimpleNode

Throws:

IOException

appendAsEJBQL

public void appendAsEJBQL(List<Object> parameterAccumulator,
 Appendable out,
 String rootId)
                   throws IOException

Description copied from class: Expression

Stores a String representation of Expression as EJBQL using a provided PrintWriter. DB path expressions produce non-standard EJBQL path expressions. If the parameterAccumulator is supplied then as the EJBQL is output, it may load parameters into this list. In this case, the EJBQL output will contain reference to positional parameters. If no parameterAccumulator is supplied and a scalar type is encountered for which there is no EJBQL literal representation (such as dates) then this method will throw a runtime exception to indicate that it was not possible to generate a string-only representation of the Expression in EJBQL.

Overrides:

appendAsEJBQL in class SimpleNode

Throws:

IOException

nameToCamelCase

protected static String nameToCamelCase(String functionName)

Parameters:

functionName - in UPPER_UNDERSCORE convention

Returns:

functionName in camelCase convention