How to specify an initial value for a sequence? (using DPL)
I've been trying to come up with a piece of code that would initialize the sequences defined within the annotations in my persistent classes, with no success. According to the documentation I could find, I figured that the following method would work:
public void initSequence(String sequenceName, String svalue) {
SequenceConfig sequenceConfig = null;
try {
sequenceConfig = m_store.getSequenceConfig(sequenceName);
sequenceConfig.setInitialValue(Long.parseLong(svalue));
m_store.setSequenceConfig(sequenceName, sequenceConfig);
System.out.println("Successfully initialized sequence: " + sequenceName);
} catch (IllegalStateException e) {
// ignore; the sequence had already been opened
} (where m_store is an EntityStore instance)
Before this method gets called, all my primary and secondary indices get created as in:
m_linkIndex = m_store.getPrimaryIndex(Integer.class, Class1.class);
etc.
And my classes look like the following:
@Entity
public class Class1 {
@SecondaryKey(relate=MANY_TO_ONE)
private String m_contentUrl;
private String m_creatorId;
@PrimaryKey(sequence="linkID")
private int m_key;
etc.
Problem: when I execute the 'initSequence' method with proper parameters (e.g. 'linkID', '10000000'), it has no apparent effect on the values the sequence uses. In fact, the sequence starts at number 1 :-(.
Could somebody explain what is that I am doing wrong? (assuming the software is not buggy). I am using version
3.3.69. Thanks in advance!
Sorry, you're right.
Before this method gets called, all my primary and secondary indices get created as in:Perhaps the problem is that you're configuring the sequence after you open the index. The sequence (and database) configuration must occur before opening the index.
--mark
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