| Methods Summary |
|---|
| public oracle.toplink.essentials.internal.databaseaccess.DatabaseCall | buildCall(oracle.toplink.essentials.internal.sessions.AbstractSession session)Return SQL call for the statement, through generating the SQL string.
SQLCall call = (SQLCall)super.buildCall(session);
Writer writer = new CharArrayWriter(100);
try {
// because where clause is null,
// call.sqlString == "DELETE FROM getTable().getQualifiedName()"
writer.write(call.getSQLString());
boolean whereWasPrinted = true;
if(selectCallForExist != null) {
if(shouldExtractWhereClauseFromSelectCallForExist) {
// Should get here only in case selectCallForExist doesn't have aliases and
// targets the same table as the statement.
// Instead of making selectCallForExist part of " WHERE EXIST("
// just extract its where clause.
// Example: selectCallForExist.sqlString:
// "SELECT PROJ_ID FROM PROJECT WHERE (LEADER_ID IS NULL)
whereWasPrinted = writeWhere(writer, selectCallForExist, call);
// The result is:
// "WHERE (LEADER_ID IS NULL)"
} else {
writer.write(" WHERE EXISTS(");
// EXIST Example: selectCallForExist.sqlString:
// "SELECT t0.EMP_ID FROM EMPLOYEE t0, SALARY t1 WHERE (((t0.F_NAME LIKE 'a') AND (t1.SALARY = 0)) AND (t1.EMP_ID = t0.EMP_ID))"
writeSelect(writer, selectCallForExist, tableAliasInSelectCallForExist, call);
// closing bracket for EXISTS
writer.write(")");
// The result is (target table is SALARY):
// "WHERE EXISTS(SELECT t0.EMP_ID FROM EMPLOYEE t0, SALARY t1 WHERE (((t0.F_NAME LIKE 'a') AND (t1.SALARY = 0)) AND (t1.EMP_ID = t0.EMP_ID)) AND t1.EMP_ID = SALARY.EMP_ID)"
}
} else if (inheritanceExpression != null) {
writer.write(" WHERE ");
// Example: (PROJ_TYPE = 'L')
ExpressionSQLPrinter printer = new ExpressionSQLPrinter(session, getTranslationRow(), call, false);
printer.setWriter(writer);
printer.printExpression(inheritanceExpression);
// The result is:
// "(PROJ_TYPE = 'L')"
} else {
whereWasPrinted = false;
}
if(selectCallForNotExist != null) {
if(whereWasPrinted) {
writer.write(" AND");
} else {
writer.write(" WHERE");
}
writer.write(" NOT EXISTS(");
// NOT EXIST Example: selectCall.sqlString:
// "SELECT t0.EMP_ID FROM EMPLOYEE t0, SALARY t1 WHERE (t1.EMP_ID = t0.EMP_ID)"
writeSelect(writer, selectCallForNotExist, tableAliasInSelectCallForNotExist, call);
// closing bracket for EXISTS
writer.write(")");
// The result is (target table is EMPLOYEE):
// "WHERE NOT EXISTS(SELECT t0.EMP_ID FROM EMPLOYEE t0, SALARY t1 WHERE ((t1.EMP_ID = t0.EMP_ID)) AND t0.EMP_ID = EMPLOYEE.EMP_ID)"
}
call.setSQLString(writer.toString());
} catch (IOException exception) {
throw ValidationException.fileError(exception);
}
return call;
|
| public java.util.Vector | getAliasedFieldsForExpression()
return aliasedFields;
|
| public oracle.toplink.essentials.expressions.Expression | getInheritanceExpression()
return inheritanceExpression;
|
| public java.util.Vector | getOriginalFieldsForJoin()
return originalFields;
|
| public oracle.toplink.essentials.queryframework.SQLCall | getSelectCallForExist()
return selectCallForExist;
|
| public oracle.toplink.essentials.queryframework.SQLCall | getSelectCallForNotExist()
return selectCallForNotExist;
|
| public java.lang.String | getTableAliasInSelectCallForExist()
return tableAliasInSelectCallForExist;
|
| public java.lang.String | getTableAliasInSelectCallForNotExist()
return tableAliasInSelectCallForNotExist;
|
| public void | setAliasedFieldsForJoin(java.util.Vector aliasedFields)
this.aliasedFields = aliasedFields;
|
| public void | setInheritanceExpression(oracle.toplink.essentials.expressions.Expression inheritanceExpression)
this.inheritanceExpression = inheritanceExpression;
|
| public void | setOriginalFieldsForJoin(java.util.Vector originalFields)
this.originalFields = originalFields;
|
| public void | setPrimaryKeyFieldsForAutoJoin(java.util.Collection primaryKeyFields)
if(primaryKeyFields != null) {
if(primaryKeyFields instanceof Vector) {
setOriginalFieldsForJoin((Vector)primaryKeyFields);
} else {
setOriginalFieldsForJoin(new Vector(primaryKeyFields));
}
setAliasedFieldsForJoin((Vector)getOriginalFieldsForJoin().clone());
} else {
setOriginalFieldsForJoin(null);
setAliasedFieldsForJoin(null);
}
|
| public void | setSelectCallForExist(oracle.toplink.essentials.queryframework.SQLCall selectCallForExist)
this.selectCallForExist = selectCallForExist;
|
| public void | setSelectCallForNotExist(oracle.toplink.essentials.queryframework.SQLCall selectCallForNotExist)
this.selectCallForNotExist = selectCallForNotExist;
|
| public void | setShouldExtractWhereClauseFromSelectCallForExist(boolean shouldExtractWhereClauseFromSelectCallForExist)
this.shouldExtractWhereClauseFromSelectCallForExist = shouldExtractWhereClauseFromSelectCallForExist;
|
| public void | setTableAliasInSelectCallForExist(java.lang.String tableAliasInSelectCallForExist)
this.tableAliasInSelectCallForExist = tableAliasInSelectCallForExist;
|
| public void | setTableAliasInSelectCallForNotExist(java.lang.String tableAliasInSelectCallForNotExist)
this.tableAliasInSelectCallForNotExist = tableAliasInSelectCallForNotExist;
|
| public boolean | shouldExtractWhereClauseFromSelectCallForExist()
return shouldExtractWhereClauseFromSelectCallForExist;
|
| protected void | writeSelect(java.io.Writer writer, oracle.toplink.essentials.queryframework.SQLCall selectCall, java.lang.String tableAliasInSelectCall, oracle.toplink.essentials.queryframework.SQLCall call)
String str = selectCall.getSQLString();
writer.write(str);
boolean hasWhereClause = str.toUpperCase().indexOf(" WHERE ") >= 0;
// join aliased fields to original fields
// Examples:
// table aliase provided: AND t0.EMP_ID = EMPLOYEE.EMP_ID
// table aliase not provided: AND EMP_ID = EMPLOYEE.EMP_ID
for(int i=0; i < originalFields.size(); i++) {
if(i==0 && !hasWhereClause) {
// there is no where clause - should print WHERE
writer.write(" WHERE ");
} else {
writer.write(" AND ");
}
if(tableAliasInSelectCall != null) {
writer.write(tableAliasInSelectCall);
writer.write('.");
}
writer.write(((DatabaseField)aliasedFields.elementAt(i)).getName());
writer.write(" = ");
writer.write(table.getQualifiedName());
writer.write('.");
writer.write(((DatabaseField)originalFields.elementAt(i)).getName());
}
// add parameters
call.getParameters().addAll(selectCall.getParameters());
call.getParameterTypes().addAll(selectCall.getParameterTypes());
|
| protected boolean | writeWhere(java.io.Writer writer, oracle.toplink.essentials.queryframework.SQLCall selectCall, oracle.toplink.essentials.queryframework.SQLCall call)
String selectStr = selectCallForExist.getSQLString();
int index = selectStr.toUpperCase().indexOf(" WHERE ");
if(index < 0) {
// no where clause - nothing to do
return false;
}
// print the where clause
String str = selectStr.substring(index);
writer.write(str);
// add parameters
call.getParameters().addAll(selectCall.getParameters());
call.getParameterTypes().addAll(selectCall.getParameterTypes());
return true;
|
