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https://issues.apache.org/jira/browse/LUCENE-1217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12577547#action_12577547
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Michael McCandless commented on LUCENE-1217:
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Patch looks good. I will commit shortly. Thanks Eks Dev.
{quote}
Would it not make sense to maintain type with some integer/byte"poor man's
enum" (Interface with a couple of constants)
{quote}
Or we could wait until Java 5 (3.0) and use real enums?
Or ... maybe we should have subclasses of Field (TextField, BinaryField,
ReaderField, TokenStreamField) which override the corresponding method
(and the base Field.java would still implement these methods but
return null)? Though this would be a rather large change...
> use isBinary cached variable instead of instanceof in Filed
> -----------------------------------------------------------
>
> Key: LUCENE-1217
> URL: https://issues.apache.org/jira/browse/LUCENE-1217
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Other
> Reporter: Eks Dev
> Assignee: Michael McCandless
> Priority: Trivial
> Attachments: LUCENE-1217.patch
>
>
> Filed class can hold three types of values,
> See: AbstractField.java protected Object fieldsData = null;
> currently, mainly RTTI (instanceof) is used to determine the type of the
> value stored in particular instance of the Field, but for binary value we
> have mixed RTTI and cached variable "boolean isBinary"
> This patch makes consistent use of cached variable isBinary.
> Benefit: consistent usage of method to determine run-time type for binary
> case (reduces chance to get out of sync on cached variable). It should be
> slightly faster as well.
> Thinking aloud:
> Would it not make sense to maintain type with some integer/byte"poor man's
> enum" (Interface with a couple of constants)
> code:java{
> public static final interface Type{
> public static final byte BOOLEAN = 0;
> public static final byte STRING = 1;
> public static final byte READER = 2;
> ....
> }
> }
> and use that instead of isBinary + instanceof?
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