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java.lang.Object org.apache.openjpa.jdbc.meta.strats.AbstractStrategy org.apache.openjpa.jdbc.meta.strats.AbstractFieldStrategy org.apache.openjpa.jdbc.meta.strats.ContainerFieldStrategy
public abstract class ContainerFieldStrategy
An abstract container mapping that handles traversing the join to examine the size of the relation.
Field Summary |
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Fields inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractFieldStrategy |
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field |
Constructor Summary | |
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ContainerFieldStrategy()
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Method Summary | |
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void |
appendIsEmpty(SQLBuffer sql,
Select sel,
Joins joins)
Append a where clause to the given statement checking if this value is empty. |
void |
appendIsNotEmpty(SQLBuffer sql,
Select sel,
Joins joins)
Append a where clause to the given statement checking if this value is not empty. |
void |
appendIsNotNull(SQLBuffer sql,
Select sel,
Joins joins)
Append a where clause to the given statement checking if this value is not null. |
void |
appendIsNull(SQLBuffer sql,
Select sel,
Joins joins)
Append a where clause to the given statement checking if this value is null. |
protected static void |
appendJoinCount(SQLBuffer sql,
Select sel,
Joins joins,
DBDictionary dict,
FieldMapping field,
ForeignKey fk)
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void |
appendSize(SQLBuffer sql,
Select sel,
Joins joins)
Append a where clause to the given statement checking the size of the value. |
static void |
appendUnaliasedJoin(SQLBuffer sql,
Select sel,
Joins joins,
DBDictionary dict,
FieldMapping field,
ForeignKey fk)
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protected abstract ClassMapping[] |
getIndependentElementMappings(boolean traverse)
Return all independent mappings to which this strategy must join in order to access collection elements, or empty array if none. |
protected abstract ForeignKey |
getJoinForeignKey()
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Methods inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractFieldStrategy |
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assertNotMappedBy, isEagerSelectToMany, isVersionable, join, joinKey, joinKeyRelation, joinRelation, load, load, loadEagerJoin, loadEagerParallel, loadKeyProjection, loadProjection, select, selectEagerJoin, selectEagerParallel, setFieldMapping, supportsSelect, toDataStoreValue, toKeyDataStoreValue, where |
Methods inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractStrategy |
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customDelete, customInsert, customUpdate, delete, getAlias, initialize, insert, isCustomDelete, isCustomInsert, isCustomUpdate, map, update |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.apache.openjpa.jdbc.meta.Strategy |
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customDelete, customInsert, customUpdate, delete, getAlias, initialize, insert, isCustomDelete, isCustomInsert, isCustomUpdate, map, update |
Constructor Detail |
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public ContainerFieldStrategy()
Method Detail |
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protected abstract ClassMapping[] getIndependentElementMappings(boolean traverse)
traverse
- whether we're traversing through to the related typeValueMapping.getIndependentTypeMappings()
,
ClassMapping.EMPTY_MAPPINGS
public void appendIsEmpty(SQLBuffer sql, Select sel, Joins joins)
FieldStrategy
appendIsEmpty
in interface FieldStrategy
appendIsEmpty
in class AbstractFieldStrategy
public void appendIsNotEmpty(SQLBuffer sql, Select sel, Joins joins)
FieldStrategy
appendIsNotEmpty
in interface FieldStrategy
appendIsNotEmpty
in class AbstractFieldStrategy
public void appendIsNull(SQLBuffer sql, Select sel, Joins joins)
FieldStrategy
appendIsNull
in interface FieldStrategy
appendIsNull
in class AbstractFieldStrategy
public void appendIsNotNull(SQLBuffer sql, Select sel, Joins joins)
FieldStrategy
appendIsNotNull
in interface FieldStrategy
appendIsNotNull
in class AbstractFieldStrategy
protected abstract ForeignKey getJoinForeignKey()
public void appendSize(SQLBuffer sql, Select sel, Joins joins)
FieldStrategy
appendSize
in interface FieldStrategy
appendSize
in class AbstractFieldStrategy
protected static void appendJoinCount(SQLBuffer sql, Select sel, Joins joins, DBDictionary dict, FieldMapping field, ForeignKey fk)
public static void appendUnaliasedJoin(SQLBuffer sql, Select sel, Joins joins, DBDictionary dict, FieldMapping field, ForeignKey fk)
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