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java.lang.Objectcom.google.appengine.api.search.Query
public class Query
A query to search an index for documents which match, restricting the document fields returned to those given, and scoring and sorting the results, whilst supporting pagination.
For example, the following query will search for documents where
the tokens 'good' and 'story' occur in some fields,
returns up to 20 results including the fields 'author' and 'date-sent'
as well as snippeted fields 'subject' and 'body'. The results
are sorted by 'author' in descending order, getting the next 20 results
from the responseCursor in the previously returned results, giving
back a single cursor in the Results
to get the next
batch of results after this.
QueryOptions options = QueryOptions.newBuilder() .setLimit(20) .setFieldsToSnippet("subject", "body") .setScorer(CustomScorer.newBuilder() .addSortExpression(SortExpression.newBuilder() .setExpression("author") .setDirection(SortDirection.DESCENDING) .setDefaultValue(""))) .setCursor(responseCursor) .build(); Query query = Query.newBuilder() .setOptions(options) .build("good story");
Nested Class Summary | |
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static class |
Query.Builder
A builder which constructs Query objects. |
Method Summary | |
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QueryOptions |
getOptions()
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java.lang.String |
getQueryString()
The query can be as simple as a single term ("foo"), or as complex as a boolean expression, including field names ("title:hello OR body:important -october"). |
static Query.Builder |
newBuilder()
Creates and returns a Query builder. |
static Query.Builder |
newBuilder(Query query)
Creates a builder from the given query. |
java.lang.String |
toString()
|
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Method Detail |
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public java.lang.String getQueryString()
public QueryOptions getOptions()
QueryOptions
for controlling the what is returned
in the result set matching the querypublic static Query.Builder newBuilder()
Query
builder. Set the query
parameters and use the Query.Builder.build()
method to create a concrete
instance of Query.
Query.Builder
which can construct a querypublic static Query.Builder newBuilder(Query query)
query
- the query for the builder to use to build another querypublic java.lang.String toString()
toString
in class java.lang.Object
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