[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-678) @NumericField does not work with BigDecimal types (and others?)
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http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-678?pag...
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G Fernandes commented on HSEARCH-678:
-------------------------------------
Here's a way to achieve that. Suppose an entity with a BigDecimal, you could use a
bridge to do the conversion to long:
{noformat}
@Entity @Indexed
public class Price {
@Id
private int id;
@Field @NumericField
@FieldBridge(impl = BigDecimalNumericFieldBridge.class)
private BigDecimal val;
public Price() {}
public Price(int id, String price) {
this.id = id;
this.val = new BigDecimal(price);
}
}
{noformat}
The Bridge would simply multiply per 100 when indexing:
{noformat}
public class BigDecimalNumericFieldBridge extends NumericFieldBridge {
@Override
public void set(String name, Object value, Document document, LuceneOptions
luceneOptions) {
if (value != null) {
BigDecimal decimalValue = (BigDecimal) value;
long indexedValue = decimalValue.multiply(BigDecimal.valueOf(100)).longValue();
luceneOptions.addNumericFieldToDocument(name, indexedValue, document);
}
}
}
{noformat}
The only caveat is that you need to remember multiply by 100 when you do the queries.
@NumericField does not work with BigDecimal types (and others?)
---------------------------------------------------------------
Key: HSEARCH-678
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-678
Project: Hibernate Search
Issue Type: Bug
Components: mapping, query
Affects Versions: 3.3.0.Final
Environment: Hibernate 3.6.0, MySQL 5.1.52, Fedora Core 14
Reporter: Nick Fenwick
Assignee: G Fernandes
Fix For: 3.4.0
Attachments: HSEARCH-678-unittest1.tgz
This is my first JIRA so please help me assigns its Component above correctly.
My first attempt to use BigDecimal ran into trouble trying to use the new @NumericField
annotation. The SessionFactory fails to create an instance of the session. The code:
{{
@Column(name="val")
@Field(name="val", index=Index.UN_TOKENIZED, store=Store.YES)
@NumericField
private BigDecimal val;
}}
Results in the exception:
{{
Exception in thread "main" java.lang.ExceptionInInitializerError
[cut]
Caused by: org.hibernate.HibernateException: could not init listeners
[cut]
Caused by: org.hibernate.search.SearchException: Unable to guess FieldBridge for val
at org.hibernate.search.bridge.BridgeFactory.guessType(BridgeFactory.java:250)
at
org.hibernate.search.engine.AbstractDocumentBuilder.bindFieldAnnotation(AbstractDocumentBuilder.java:690)
at
org.hibernate.search.engine.AbstractDocumentBuilder.checkForField(AbstractDocumentBuilder.java:564)
[cut]
}}
Taking out the @NumericField allows the session to start up successfully.
I will attempt to make a test case but I'm having local build env issues. 'mvn
clean install' of a fresh hibernate search git checkout is taking an incredibly long
time (an hour for the first 10 or so .pom files?) so I may be several hours or days over
this trivial task.
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