org.openanzo.sqlscribe
Class VariableMatch

java.lang.Object
  org.openanzo.sqlscribe.Match
      org.openanzo.sqlscribe.VariableMatch

All Implemented Interfaces:

Constraint

public class VariableMatch
extends Match
implements Constraint

Extension of a value constraint in SQL that takes advantage of JDBC prepared statement variable bindings. For example: "SELECT id WHERE type = ?" is a prepared statement with a variable binding. See the SqlQuery builder class for details on how to bind to these variables when executing a query.

Author:

Joe Betz

Constructor Summary

VariableMatch(Column lhs, java.lang.String operator, java.lang.String varName)
Create a new VariableMatch

Method Summary

java.lang.String	getConstraint(java.util.List<java.lang.String> unboundVariables) Get the SQL text for this constraint, using any variables from the provided list
java.lang.String	getVariableName() Get the variable name for this match
void	writeConstraint(java.lang.StringBuffer buf, java.util.List<java.lang.String> unboundVariables) Write the SQL text for this constraint to the provided buffer, using any variables from the provided list

Methods inherited from class org.openanzo.sqlscribe.Match

equals, equals, getLhs, getOperator, greater, greater, in, isNotNull, isNull, less, less, listTables, varEquals, varGreater, varGreaterEquals, varLess, varLessEquals

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.openanzo.sqlscribe.Constraint

listTables

Constructor Detail

VariableMatch

public VariableMatch(Column lhs,
                     java.lang.String operator,
                     java.lang.String varName)

Create a new VariableMatch

Parameters:

lhs - column to match

operator - type of match operation to use

varName - name of variable

Method Detail

getVariableName

public java.lang.String getVariableName()

Get the variable name for this match

Returns:

the variable name for this match

getConstraint

public java.lang.String getConstraint(java.util.List<java.lang.String> unboundVariables)

Description copied from interface: Constraint

Get the SQL text for this constraint, using any variables from the provided list

Specified by:

getConstraint in interface Constraint

Parameters:

unboundVariables - set of variables that can be used within constraints

Returns:

the SQL text for this constraint, using any variables from the provided list

writeConstraint

public void writeConstraint(java.lang.StringBuffer buf,
                            java.util.List<java.lang.String> unboundVariables)

Description copied from interface: Constraint

Write the SQL text for this constraint to the provided buffer, using any variables from the provided list

Specified by:

writeConstraint in interface Constraint

Parameters:

buf - StringBuffer to which the SQL text for this constraint is appended

unboundVariables - set of variables that can be used within constraints