/**
* @param tablePath the query entity
* @param path the path
* @return the column object
*/
private static Column createColumn(RelationalPath<?> tablePath, Path<?> path) {
final String columnName = path.getMetadata().getExpression().toString();
final ColumnType columnType = getColumnType(path.getType());
final Field field = ClassUtils.getFieldWithValue(tablePath, path);
// settings
int columnSize = -1;
boolean columnNullable = false;
boolean hasDefaultValue = false;
String defaultValue = null;
if (field != null) {
final ColumnSize size = field.getAnnotation(ColumnSize.class);
if (size != null) {
columnSize = size.value();
}
final ColumnAutoIncrement autoInc = field.getAnnotation(ColumnAutoIncrement.class);
if (autoInc != null) {
return new Column(columnName, columnSize, true);
}
final ColumnNullable nullable = field.getAnnotation(ColumnNullable.class);
if (nullable == null) {
columnNullable = false;
} else {
columnNullable = true;
}
final ColumnDefault def = field.getAnnotation(ColumnDefault.class);
if (def == null && nullable != null) {
hasDefaultValue = true;
defaultValue = null;
} else if (def != null) {
hasDefaultValue = true;
defaultValue = def.value();
}
}
if (columnType == ColumnType.ENUM) {
@SuppressWarnings("unchecked")
Class<? extends Enum<?>> enumClass = (Class<? extends Enum<?>>) path.getType();
Enum<?>[] enums = enumClass.getEnumConstants();
final List<String> enumValues = CollectionFactory.newList();
for (final Enum<?> e : enums) {
enumValues.add(e.name());
}
return new Column(columnName, columnNullable, enumValues, hasDefaultValue, defaultValue);
}
return new Column(
columnName, columnType, columnNullable, columnSize, hasDefaultValue, defaultValue);
}
/**
* @param type the java type
* @return the database column type
*/
private static ColumnType getColumnType(Class<?> type) {
if (ClassUtils.isSubclass(type, String.class)) return ColumnType.STRING;
else if (type.isEnum()) return ColumnType.ENUM;
else if (ClassUtils.isSubclass(type, Integer.class)) return ColumnType.INTEGER;
else if (ClassUtils.isSubclass(type, Long.class)) return ColumnType.INTEGER;
else if (ClassUtils.isSubclass(type, Double.class)) return ColumnType.DOUBLE;
else if (ClassUtils.isSubclass(type, Float.class)) return ColumnType.DOUBLE;
else if (ClassUtils.isSubclass(type, Date.class)) return ColumnType.TIMESTAMP;
return null;
}