com.tonbeller.wcf.param
Class SqlGenerator

java.lang.Object
  com.tonbeller.wcf.param.SqlGenerator

All Implemented Interfaces:

SqlExprVisitor

public class SqlGenerator

extends java.lang.Object

implements SqlExprVisitor

Since:

31.01.2005

Author:

av

Field Summary

static java.lang.String

DEFAULT_COLUMN_ID if no columnId is set in an SqlExpr use this string to look up the column name

Constructor Summary

SqlGenerator()

SqlGenerator(java.util.Map columnMap)

SqlGenerator(java.lang.String defaultColumn)

Method Summary

protected boolean	containsNull(java.lang.Object[] values)
protected SqlGenerator	copyGenerator() returns a new SqlGenerator that shares the same settings as this.
void	genAndOr(com.tonbeller.wcf.param.SqlExprWithOperands exp, java.lang.String keyword)
java.lang.String	generate(SqlExpr sqlExpr) generates SQL string from expression
protected java.lang.String	generateList(java.lang.Object[] values)
protected java.lang.String	generateOpd(SqlExpr opd) generates SQL for opd in a new SqlGenerator
java.util.Map	getColumnMap() maps columnIds to column names.
protected java.lang.String	getColumnName(SqlColumnConstraint scc)
protected java.lang.Object[]	removeNulls(java.lang.Object[] values)
void	setColumnMap(java.util.Map columnMap) maps columnIds to column names.
void	visitSqlAndExpr(SqlAndExpr exp)
void	visitSqlBetweenExpr(SqlBetweenExpr exp)
void	visitSqlDummyExpr(SqlDummyExpr exp)
void	visitSqlEqualExpr(SqlEqualExpr exp)
void	visitSqlInExpr(SqlInExpr exp)
void	visitSqlOrExpr(SqlOrExpr exp)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_COLUMN_ID

public static final java.lang.String DEFAULT_COLUMN_ID

if no columnId is set in an SqlExpr use this string to look up the column name

See Also:

Constant Field Values

Constructor Detail

SqlGenerator

public SqlGenerator()

SqlGenerator

public SqlGenerator(java.lang.String defaultColumn)

Parameters:

defaultColumn - the name of the generated column if no column id is present in the SqlExpr

SqlGenerator

public SqlGenerator(java.util.Map columnMap)

Method Detail

copyGenerator

protected SqlGenerator copyGenerator()

returns a new SqlGenerator that shares the same settings as this.

generateOpd

protected java.lang.String generateOpd(SqlExpr opd)

generates SQL for opd in a new SqlGenerator

getColumnName

protected java.lang.String getColumnName(SqlColumnConstraint scc)

genAndOr

public void genAndOr(com.tonbeller.wcf.param.SqlExprWithOperands exp,
                     java.lang.String keyword)

visitSqlAndExpr

public void visitSqlAndExpr(SqlAndExpr exp)

Specified by:

visitSqlAndExpr in interface SqlExprVisitor

visitSqlOrExpr

public void visitSqlOrExpr(SqlOrExpr exp)

Specified by:

visitSqlOrExpr in interface SqlExprVisitor

visitSqlBetweenExpr

public void visitSqlBetweenExpr(SqlBetweenExpr exp)

Specified by:

visitSqlBetweenExpr in interface SqlExprVisitor

visitSqlEqualExpr

public void visitSqlEqualExpr(SqlEqualExpr exp)

Specified by:

visitSqlEqualExpr in interface SqlExprVisitor

visitSqlDummyExpr

public void visitSqlDummyExpr(SqlDummyExpr exp)

Specified by:

visitSqlDummyExpr in interface SqlExprVisitor

visitSqlInExpr

public void visitSqlInExpr(SqlInExpr exp)

Specified by:

visitSqlInExpr in interface SqlExprVisitor

generateList

protected java.lang.String generateList(java.lang.Object[] values)

removeNulls

protected java.lang.Object[] removeNulls(java.lang.Object[] values)

containsNull

protected boolean containsNull(java.lang.Object[] values)

generate

public java.lang.String generate(SqlExpr sqlExpr)

generates SQL string from expression

getColumnMap

public java.util.Map getColumnMap()

maps columnIds to column names. Example: "CUSTOMER" -> "CUSTOMER_TABLE.CUSTOMER_FK"

setColumnMap

public void setColumnMap(java.util.Map columnMap)

maps columnIds to column names. Example: "CUSTOMER" -> "CUSTOMER_TABLE.CUSTOMER_FK"