| Methods Summary |
|---|
| protected void | appendByteArray(byte[] bytes, java.io.Writer writer)INTERNAL:
Append a byte[] in native DB@ format BLOB(hexString) if usesNativeSQL(),
otherwise use ODBC format from DatabasePLatform.
if (usesNativeSQL()) {
writer.write("BLOB(x'");
Helper.writeHexString(bytes, writer);
writer.write("')");
} else {
super.appendByteArray(bytes, writer);
}
|
| protected void | appendCalendar(java.util.Calendar calendar, java.io.Writer writer)INTERNAL:
Append the Timestamp in native format if usesNativeSQL() is true otherwise use ODBC format from DatabasePlatform.
Native format: 'YYYY-MM-DD-hh.mm.ss.SSSSSS'
if (usesNativeSQL()) {
writer.write("'");
appendDB2Calendar(calendar, writer);
writer.write("'");
} else {
super.appendCalendar(calendar, writer);
}
|
| protected void | appendDB2Calendar(java.util.Calendar calendar, java.io.Writer writer)INTERNAL:
Write a timestamp in DB2 specific format (yyyy-mm-dd-hh.mm.ss.ffffff).
int hour;
int minute;
int second;
if (!Helper.getDefaultTimeZone().equals(calendar.getTimeZone())) {
// Must convert the calendar to the local timezone if different, as dates have no timezone (always local).
Calendar localCalendar = Helper.allocateCalendar();
JavaPlatform.setTimeInMillis(localCalendar, JavaPlatform.getTimeInMillis(calendar));
hour = calendar.get(Calendar.HOUR_OF_DAY);
minute = calendar.get(Calendar.MINUTE);
second = calendar.get(Calendar.SECOND);
Helper.releaseCalendar(localCalendar);
} else {
hour = calendar.get(Calendar.HOUR_OF_DAY);
minute = calendar.get(Calendar.MINUTE);
second = calendar.get(Calendar.SECOND);
}
writer.write(Helper.printDate(calendar));
writer.write('-");
if (hour < 10) {
writer.write('0");
}
writer.write(Integer.toString(hour));
writer.write('.");
if (minute < 10) {
writer.write('0");
}
writer.write(Integer.toString(minute));
writer.write('.");
if (second < 10) {
writer.write('0");
}
writer.write(Integer.toString(second));
writer.write('.");
// Must truncate the nanos to six decimal places,
// it is actually a complex algorithm...
String millisString = Integer.toString(calendar.get(Calendar.MILLISECOND));
int numberOfZeros = 0;
for (int num = Math.min(3 - millisString.length(), 3); num > 0; num--) {
writer.write('0");
numberOfZeros++;
}
if ((millisString.length() + numberOfZeros) > 3) {
millisString = millisString.substring(0, (3 - numberOfZeros));
}
writer.write(millisString);
|
| protected void | appendDB2Date(java.sql.Date date, java.io.Writer writer)INTERNAL:
Write a timestamp in DB2 specific format (mm/dd/yyyy).
writer.write("'");
// PERF: Avoid deprecated get methods, that are now very inefficient and used from toString.
Calendar calendar = Helper.allocateCalendar();
calendar.setTime(date);
if ((calendar.get(Calendar.MONTH) + 1) < 10) {
writer.write('0");
}
writer.write(Integer.toString(calendar.get(Calendar.MONTH) + 1));
writer.write('/");
if (calendar.get(Calendar.DATE) < 10) {
writer.write('0");
}
writer.write(Integer.toString(calendar.get(Calendar.DATE)));
writer.write('/");
writer.write(Integer.toString(calendar.get(Calendar.YEAR)));
writer.write("'");
Helper.releaseCalendar(calendar);
|
| protected void | appendDB2Timestamp(java.sql.Timestamp timestamp, java.io.Writer writer)INTERNAL:
Write a timestamp in DB2 specific format (yyyy-mm-dd-hh.mm.ss.ffffff).
// PERF: Avoid deprecated get methods, that are now very inefficient and used from toString.
Calendar calendar = Helper.allocateCalendar();
calendar.setTime(timestamp);
writer.write(Helper.printDate(calendar));
writer.write('-");
if (calendar.get(Calendar.HOUR_OF_DAY) < 10) {
writer.write('0");
}
writer.write(Integer.toString(calendar.get(Calendar.HOUR_OF_DAY)));
writer.write('.");
if (calendar.get(Calendar.MINUTE) < 10) {
writer.write('0");
}
writer.write(Integer.toString(calendar.get(Calendar.MINUTE)));
writer.write('.");
if (calendar.get(Calendar.SECOND) < 10) {
writer.write('0");
}
writer.write(Integer.toString(calendar.get(Calendar.SECOND)));
writer.write('.");
Helper.releaseCalendar(calendar);
// Must truncate the nanos to six decimal places,
// it is actually a complex algorithm...
String nanoString = Integer.toString(timestamp.getNanos());
int numberOfZeros = 0;
for (int num = Math.min(9 - nanoString.length(), 6); num > 0; num--) {
writer.write('0");
numberOfZeros++;
}
if ((nanoString.length() + numberOfZeros) > 6) {
nanoString = nanoString.substring(0, (6 - numberOfZeros));
}
writer.write(nanoString);
|
| protected void | appendDate(java.sql.Date date, java.io.Writer writer)INTERNAL:
Appends the Date in native format if usesNativeSQL() otherwise use ODBC format from DatabasePlatform.
Native format: 'mm/dd/yyyy'
if (usesNativeSQL()) {
appendDB2Date(date, writer);
} else {
super.appendDate(date, writer);
}
|
| protected void | appendTime(java.sql.Time time, java.io.Writer writer)INTERNAL:
Append the Time in Native format if usesNativeSQL() otherwise use ODBC format from DAtabasePlatform.
Native Format: 'hh:mm:ss'
if (usesNativeSQL()) {
writer.write("'");
writer.write(Helper.printTime(time));
writer.write("'");
} else {
super.appendTime(time, writer);
}
|
| protected void | appendTimestamp(java.sql.Timestamp timestamp, java.io.Writer writer)INTERNAL:
Append the Timestamp in native format if usesNativeSQL() is true otherwise use ODBC format from DatabasePlatform.
Native format: 'YYYY-MM-DD-hh.mm.ss.SSSSSS'
if (usesNativeSQL()) {
writer.write("'");
appendDB2Timestamp(timestamp, writer);
writer.write("'");
} else {
super.appendTimestamp(timestamp, writer);
}
|
| protected java.util.Hashtable | buildFieldTypes()
Hashtable fieldTypeMapping = new Hashtable();
fieldTypeMapping.put(Boolean.class, new FieldTypeDefinition("SMALLINT DEFAULT 0", false));
fieldTypeMapping.put(Integer.class, new FieldTypeDefinition("INTEGER", false));
fieldTypeMapping.put(Long.class, new FieldTypeDefinition("INTEGER", false));
fieldTypeMapping.put(Float.class, new FieldTypeDefinition("FLOAT", false));
fieldTypeMapping.put(Double.class, new FieldTypeDefinition("FLOAT", false));
fieldTypeMapping.put(Short.class, new FieldTypeDefinition("SMALLINT", false));
fieldTypeMapping.put(Byte.class, new FieldTypeDefinition("SMALLINT", false));
fieldTypeMapping.put(java.math.BigInteger.class, new FieldTypeDefinition("BIGINT", false));
fieldTypeMapping.put(java.math.BigDecimal.class, new FieldTypeDefinition("DECIMAL", 15));
fieldTypeMapping.put(Number.class, new FieldTypeDefinition("DECIMAL", 15));
fieldTypeMapping.put(String.class, new FieldTypeDefinition("VARCHAR", 255));
fieldTypeMapping.put(Character.class, new FieldTypeDefinition("CHAR", 1));
fieldTypeMapping.put(Byte[].class, new FieldTypeDefinition("BLOB", 64000));
fieldTypeMapping.put(Character[].class, new FieldTypeDefinition("CLOB", 64000));
fieldTypeMapping.put(byte[].class, new FieldTypeDefinition("BLOB", 64000));
fieldTypeMapping.put(char[].class, new FieldTypeDefinition("CLOB", 64000));
fieldTypeMapping.put(java.sql.Blob.class, new FieldTypeDefinition("BLOB", 64000));
fieldTypeMapping.put(java.sql.Clob.class, new FieldTypeDefinition("CLOB", 64000));
fieldTypeMapping.put(java.sql.Date.class, new FieldTypeDefinition("DATE", false));
fieldTypeMapping.put(java.sql.Time.class, new FieldTypeDefinition("TIME", false));
fieldTypeMapping.put(java.sql.Timestamp.class, new FieldTypeDefinition("TIMESTAMP", false));
return fieldTypeMapping;
|
| public oracle.toplink.essentials.queryframework.ValueReadQuery | buildSelectQueryForNativeSequence()INTERNAL:
Build the identity query for native sequencing.
ValueReadQuery selectQuery = new ValueReadQuery();
StringWriter writer = new StringWriter();
writer.write("SELECT IDENTITY_VAL_LOCAL() FROM SYSIBM.SYSDUMMY1");
selectQuery.setSQLString(writer.toString());
return selectQuery;
|
| private oracle.toplink.essentials.expressions.ExpressionOperator | concatOperator()The Concat operator is of the form
.... VARCHAR ( || )
ExpressionOperator exOperator = new ExpressionOperator();
exOperator.setType(ExpressionOperator.FunctionOperator);
exOperator.setSelector(ExpressionOperator.Concat);
Vector v = new Vector(5);
v.addElement("VARCHAR(");
v.addElement(" || ");
v.addElement(")");
exOperator.printsAs(v);
exOperator.bePrefix();
exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
return exOperator;
|
| protected java.lang.String | getCreateTempTableSqlBodyForTable(oracle.toplink.essentials.internal.helper.DatabaseTable table)INTERNAL:
return " LIKE " + table.getQualifiedName();
|
| protected java.lang.String | getCreateTempTableSqlPrefix()INTERNAL:
return "DECLARE GLOBAL TEMPORARY TABLE ";
|
| protected java.lang.String | getCreateTempTableSqlSuffix()INTERNAL:
return " ON COMMIT DELETE ROWS NOT LOGGED";
|
| public int | getMaxFieldNameSize()INTERNAL:
returns the maximum number of characters that can be used in a field
name on this platform.
return 128;
|
| public int | getMaxForeignKeyNameSize()INTERNAL:
returns the maximum number of characters that can be used in a foreign key
name on this platform.
return 18;
|
| public java.util.Vector | getNativeTableInfo(java.lang.String table, java.lang.String creator, oracle.toplink.essentials.internal.sessions.AbstractSession session)INTERNAL:
Return the catalog information through using the native SQL catalog selects.
This is required because many JDBC driver do not support meta-data.
Willcards can be passed as arguments.
String query = "SELECT * FROM SYSIBM.SYSTABLES WHERE TBCREATOR NOT IN ('SYS', 'SYSTEM')";
if (table != null) {
if (table.indexOf('%") != -1) {
query = query + " AND TBNAME LIKE " + table;
} else {
query = query + " AND TBNAME = " + table;
}
}
if (creator != null) {
if (creator.indexOf('%") != -1) {
query = query + " AND TBCREATOR LIKE " + creator;
} else {
query = query + " AND TBCREATOR = " + creator;
}
}
return session.executeSelectingCall(new oracle.toplink.essentials.queryframework.SQLCall(query));
|
| public java.lang.String | getProcedureAsString()INTERNAL:
Used for stored procedure defs.
return "";
|
| public java.lang.String | getProcedureBeginString()INTERNAL:
Used for stored procedure defs.
return "BEGIN";
|
| public java.lang.String | getProcedureCallHeader()INTERNAL:
Used for sp calls.
return "CALL ";
|
| public java.lang.String | getProcedureEndString()INTERNAL:
Used for stored procedure defs.
return "END";
|
| public java.lang.String | getSelectForUpdateString()INTERNAL:
return " FOR UPDATE";
|
| public oracle.toplink.essentials.internal.helper.DatabaseTable | getTempTableForTable(oracle.toplink.essentials.internal.helper.DatabaseTable table)INTERNAL:
DatabaseTable tempTable = super.getTempTableForTable(table);
tempTable.setTableQualifier("session");
return tempTable;
|
| public oracle.toplink.essentials.queryframework.ValueReadQuery | getTimestampQuery()INTERNAL:
This method returns the query to select the timestamp
from the server for DB2.
if (timestampQuery == null) {
timestampQuery = new ValueReadQuery();
timestampQuery.setSQLString("SELECT DISTINCT CURRENT TIMESTAMP FROM SYSIBM.SYSTABLES");
}
return timestampQuery;
|
| protected void | initializePlatformOperators()INTERNAL:
Initialize any platform-specific operators
super.initializePlatformOperators();
addOperator(ExpressionOperator.simpleFunction(ExpressionOperator.ToUpperCase, "UCASE"));
addOperator(ExpressionOperator.simpleFunction(ExpressionOperator.ToLowerCase, "LCASE"));
addOperator(concatOperator());
addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Instring, "Locate"));
//CR#2811076 some missing DB2 functions added.
addOperator(ExpressionOperator.simpleFunction(ExpressionOperator.ToNumber, "DECIMAL"));
addOperator(ExpressionOperator.simpleFunction(ExpressionOperator.ToChar, "CHAR"));
addOperator(ExpressionOperator.simpleFunction(ExpressionOperator.DateToString, "CHAR"));
addOperator(ExpressionOperator.simpleFunction(ExpressionOperator.ToDate, "DATE"));
|
| public boolean | isDB2()
return true;
|
| public boolean | isNullAllowedInSelectClause()INTERNAL:
Override this if the platform cannot handle NULL in select clause.
return false;
|
| public java.util.Hashtable | maximumNumericValues()INTERNAL:
Builds a table of maximum numeric values keyed on java class. This is used for type testing but
might also be useful to end users attempting to sanitize values.
NOTE: BigInteger & BigDecimal maximums are dependent upon their precision & Scale
Hashtable values = new Hashtable();
values.put(Integer.class, new Integer(Integer.MAX_VALUE));
values.put(Long.class, new Long((long)Integer.MAX_VALUE));
values.put(Float.class, new Float(123456789));
values.put(Double.class, new Double((double)Float.MAX_VALUE));
values.put(Short.class, new Short(Short.MAX_VALUE));
values.put(Byte.class, new Byte(Byte.MAX_VALUE));
values.put(java.math.BigInteger.class, new java.math.BigInteger("999999999999999"));
values.put(java.math.BigDecimal.class, new java.math.BigDecimal("0.999999999999999"));
return values;
|
| public java.util.Hashtable | minimumNumericValues()INTERNAL:
Builds a table of minimum numeric values keyed on java class. This is used for type testing but
might also be useful to end users attempting to sanitize values.
NOTE: BigInteger & BigDecimal minimums are dependent upon their precision & Scale
Hashtable values = new Hashtable();
values.put(Integer.class, new Integer(Integer.MIN_VALUE));
values.put(Long.class, new Long((long)Integer.MIN_VALUE));
values.put(Float.class, new Float(-123456789));
values.put(Double.class, new Double((double)Float.MIN_VALUE));
values.put(Short.class, new Short(Short.MIN_VALUE));
values.put(Byte.class, new Byte(Byte.MIN_VALUE));
values.put(java.math.BigInteger.class, new java.math.BigInteger("-999999999999999"));
values.put(java.math.BigDecimal.class, new java.math.BigDecimal("-0.999999999999999"));
return values;
|
| public void | printFieldIdentityClause(java.io.Writer writer)INTERNAL:
Append the receiver's field 'identity' constraint clause to a writer
try {
writer.write(" GENERATED ALWAYS AS IDENTITY");
} catch (IOException ioException) {
throw ValidationException.fileError(ioException);
}
|
| public boolean | shouldBindLiterals()INTERNAL
Allows platform to choose whether to bind literals in DatabaseCalls or not.
return false;
|
| public boolean | shouldIgnoreException(java.sql.SQLException exception)INTERNAL:
Allow for the platform to ignore exceptions.
This is required for DB2 which throws no-data modified as an exception.
if (exception.getMessage().equals("No data found") || exception.getMessage().equals("No row was found for FETCH, UPDATE or DELETE; or the result of a query is an empty table") || (exception.getErrorCode() == 100)) {
return true;
}
return super.shouldIgnoreException(exception);
|
| public boolean | shouldNativeSequenceAcquireValueAfterInsert()INTERNAL:
If native sequencing is being used on DB2 then the values must be
retrieved after the insert.
This method is to be used *ONLY* by sequencing classes
return true;
|
| public boolean | shouldPrintOutputTokenAtStart()INTERNAL:
This is required in the construction of the stored procedures with
output parameters
return true;
|
| public boolean | shouldUseJDBCOuterJoinSyntax()INTERNAL:
JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.
return false;
|
| public boolean | supportsGlobalTempTables()INTERNAL:
return true;
|
| public boolean | supportsNativeSequenceNumbers()Return true if the receiver uses host sequence numbers, generated on the database.
DB2 does through AS IDENTITY field types.
return true;
|
| public void | writeParameterMarker(java.io.Writer writer, oracle.toplink.essentials.internal.expressions.ParameterExpression parameter)
// DB2 requires cast around parameter markers if both operands of certian
// operators are parameter markers
// This method generates CAST for parameter markers whose type is correctly
// identified by the query compiler
String paramaterMarker = "?";
Object type = parameter.getType();
if(type != null) {
BasicTypeHelperImpl typeHelper = BasicTypeHelperImpl.getInstance();
String castType = null;
if (typeHelper.isBooleanType(type) || typeHelper.isByteType(type) || typeHelper.isShortType(type)) {
castType = "SMALLINT";
} else if (typeHelper.isIntType(type)) {
castType = "INTEGER";
} else if (typeHelper.isLongType(type)) {
castType = "BIGINT";
} else if (typeHelper.isFloatType(type)) {
castType = "REAL";
} else if (typeHelper.isDoubleType(type)) {
castType = "DOUBLE";
} else if (typeHelper.isStringType(type)) {
castType = "VARCHAR(32672)";
}
if(castType != null){
paramaterMarker = "CAST (? AS " + castType + " )";
}
}
writer.write(paramaterMarker);
|
