/** retrieves the <code>FieldMetaData</code> with the corresponding name if it exists */
public FieldMetaData getFieldNamed(String fieldName) {
Enumeration fieldsEnum = getFields().elements();
while (fieldsEnum.hasMoreElements()) {
FieldMetaData field = (FieldMetaData) fieldsEnum.nextElement();
if (field.getName().equals(fieldName)) {
return field;
}
}
return null;
}
/**
* this method extracts and returns the value for the field, if the field is an array, the value
* is an <code>Vector</code>
*/
public Object extractValueFromArray(byte[] recordData) {
Object value;
if (this.isArray()) {
int offset = this.getOffset();
ArrayList fieldValue = new ArrayList(this.getArraySize());
for (int i = this.getArraySize(); i > 0; i--) {
FieldMetaData fieldCopy = this.deepCopy();
fieldCopy.setOffset(offset);
ByteConverter converter = new ByteConverter(fieldCopy, recordData);
fieldValue.add(converter.getStringValue());
offset += mySize;
}
value = fieldValue;
} else {
ByteConverter converter = new ByteConverter(this, recordData);
value = converter.getStringValue();
}
return value;
}
/** this method will write its value from the row to the record data byte array */
public void writeOnArray(CobolRow row, byte[] recordData) {
Object value = row.get(this.getName());
ByteConverter converter;
if (this.isArray()) {
// check for array first adjust size if necessary
if (this.dependsOn()) {
adjustArraySize(row);
}
int offset = this.getOffset();
Iterator elements = ((List) value).iterator();
for (int i = this.getArraySize(); i > 0; i--) {
FieldMetaData fieldCopy = this.deepCopy();
fieldCopy.setOffset(offset);
converter = new ByteConverter(fieldCopy, recordData);
String elementValue = (String) elements.next();
converter.setBytesToValue(elementValue);
offset += mySize;
}
} else {
converter = new ByteConverter(this, recordData);
converter.setBytesToValue((String) value);
}
}
/** performs a deep copy of all the attributes of the field */
public FieldMetaData deepCopy() {
FieldMetaData fieldCopy = new ElementaryFieldMetaData(new String(myName), myRecord.getName());
fieldCopy.setIsFieldRedefine(isRedefine);
fieldCopy.setDecimalPosition(decimalPosition);
fieldCopy.setArraySize(myArraySize);
fieldCopy.setSize(mySize);
fieldCopy.setOffset(myOffset);
fieldCopy.setType(myType);
if (isFieldRedefine()) {
fieldCopy.setFieldRedefined(myFieldRedefined.deepCopy());
}
fieldCopy.setDependentFieldName(new String(myDependentFieldName));
fieldCopy.setIsSigned(isSigned);
return fieldCopy;
}
