/** Add all the appropriate changes based on the column changes. */
@Override
public void generate(DdlWrite writer, AlterColumn alterColumn) throws IOException {
if (isTrue(alterColumn.isHistoryExclude())) {
regenerateHistoryTriggers(
alterColumn.getTableName(),
HistoryTableUpdate.Change.EXCLUDE,
alterColumn.getColumnName());
} else if (isFalse(alterColumn.isHistoryExclude())) {
regenerateHistoryTriggers(
alterColumn.getTableName(),
HistoryTableUpdate.Change.INCLUDE,
alterColumn.getColumnName());
}
if (hasValue(alterColumn.getDropForeignKey())) {
alterColumnDropForeignKey(writer, alterColumn);
}
if (hasValue(alterColumn.getReferences())) {
alterColumnAddForeignKey(writer, alterColumn);
}
if (hasValue(alterColumn.getDropUnique())) {
alterColumnDropUniqueConstraint(writer, alterColumn);
}
if (hasValue(alterColumn.getUnique())) {
alterColumnAddUniqueConstraint(writer, alterColumn);
}
if (hasValue(alterColumn.getUniqueOneToOne())) {
alterColumnAddUniqueOneToOneConstraint(writer, alterColumn);
}
boolean alterBaseAttributes = false;
if (hasValue(alterColumn.getType())) {
alterColumnType(writer, alterColumn);
alterBaseAttributes = true;
}
if (hasValue(alterColumn.getDefaultValue())) {
alterColumnDefaultValue(writer, alterColumn);
alterBaseAttributes = true;
}
if (alterColumn.isNotnull() != null) {
alterColumnNotnull(writer, alterColumn);
alterBaseAttributes = true;
}
if (alterBaseAttributes) {
alterColumnBaseAttributes(writer, alterColumn);
}
}
protected void alterColumnAddForeignKey(DdlWrite writer, AlterColumn alterColumn)
throws IOException {
String tableName = alterColumn.getTableName();
String fkName = alterColumn.getForeignKeyName();
String[] cols = {alterColumn.getColumnName()};
String references = alterColumn.getReferences();
int pos = references.lastIndexOf('.');
if (pos == -1) {
throw new IllegalStateException(
"Expecting period '.' character for table.column split but not found in ["
+ references
+ "]");
}
String refTableName = references.substring(0, pos);
String refColumnName = references.substring(pos + 1);
String[] refCols = {refColumnName};
alterTableAddForeignKey(writer.apply(), fkName, tableName, cols, refTableName, refCols);
}