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java.lang.Objectorg.apache.cayenne.dba.AutoAdapter
public class AutoAdapter
A DbAdapter that automatically detects the kind of database it is running on and instantiates an appropriate DB-specific adapter, delegating all subsequent method calls to this adapter.
Field Summary | |
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protected Provider<DbAdapter> |
adapterProvider
|
protected JdbcEventLogger |
logger
|
protected PkGenerator |
pkGenerator
|
Constructor Summary | |
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AutoAdapter(Provider<DbAdapter> adapterProvider,
JdbcEventLogger logger)
Creates an AutoAdapter based on a delegate adapter obtained via
"adapterProvider". |
Method Summary | |
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void |
bindParameter(java.sql.PreparedStatement statement,
java.lang.Object object,
int pos,
int sqlType,
int precision)
Binds an object value to PreparedStatement's numbered parameter. |
DbAttribute |
buildAttribute(java.lang.String name,
java.lang.String typeName,
int type,
int size,
int precision,
boolean allowNulls)
Creates and returns a DbAttribute based on supplied parameters (usually obtained from database meta data). |
java.lang.String |
createFkConstraint(DbRelationship rel)
Returns a SQL string that can be used to create a foreign key constraint for the relationship, or null if foreign keys are not supported. |
java.lang.String |
createTable(DbEntity entity)
Returns a SQL string that can be used to create database table corresponding to entity parameter. |
void |
createTableAppendColumn(java.lang.StringBuffer sqlBuffer,
DbAttribute column)
Append the column type part of a "create table" to the given StringBuffer |
java.lang.String |
createUniqueConstraint(DbEntity source,
java.util.Collection<DbAttribute> columns)
Returns a DDL string to create a unique constraint over a set of columns, or null if the unique constraints are not supported. |
java.util.Collection<java.lang.String> |
dropTableStatements(DbEntity table)
Returns a collection of SQL statements needed to drop a database table. |
java.lang.String[] |
externalTypesForJdbcType(int type)
Returns an array of RDBMS types that can be used with JDBC type . |
SQLAction |
getAction(Query query,
DataNode node)
Returns an instance of SQLAction that should handle the query. |
protected DbAdapter |
getAdapter()
Returns a proxied DbAdapter, lazily creating it on first invocation. |
java.lang.String |
getBatchTerminator()
Returns a String used to terminate a batch in command-line tools. |
ExtendedTypeMap |
getExtendedTypes()
Returns a map of ExtendedTypes that is used to translate values between Java and JDBC layer. |
PkGenerator |
getPkGenerator()
Returns a primary key generator. |
QualifierTranslator |
getQualifierTranslator(QueryAssembler queryAssembler)
|
QuotingStrategy |
getQuotingStrategy(boolean isQuoteStrategy)
|
protected DbAdapter |
loadAdapter()
Loads underlying DbAdapter delegate. |
MergerFactory |
mergerFactory()
|
void |
setPkGenerator(PkGenerator pkGenerator)
Sets a PK generator override. |
boolean |
supportsBatchUpdates()
Returns true if the target database supports batch updates. |
boolean |
supportsGeneratedKeys()
Returns true if a target database supports key autogeneration. |
boolean |
supportsUniqueConstraints()
Returns true if a target database supports UNIQUE constraints. |
java.lang.String |
tableTypeForTable()
Returns the name of the table type (as returned by DatabaseMetaData.getTableTypes ) for a simple user table. |
java.lang.String |
tableTypeForView()
Returns the name of the table type (as returned by DatabaseMetaData.getTableTypes ) for a view table. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
protected Provider<DbAdapter> adapterProvider
protected PkGenerator pkGenerator
protected JdbcEventLogger logger
Constructor Detail |
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public AutoAdapter(Provider<DbAdapter> adapterProvider, JdbcEventLogger logger)
AutoAdapter
based on a delegate adapter obtained via
"adapterProvider".
Method Detail |
---|
protected DbAdapter getAdapter()
protected DbAdapter loadAdapter()
public java.lang.String getBatchTerminator()
DbAdapter
getBatchTerminator
in interface DbAdapter
public QualifierTranslator getQualifierTranslator(QueryAssembler queryAssembler)
getQualifierTranslator
in interface DbAdapter
public SQLAction getAction(Query query, DataNode node)
DbAdapter
getAction
in interface DbAdapter
public boolean supportsUniqueConstraints()
DbAdapter
supportsUniqueConstraints
in interface DbAdapter
public boolean supportsGeneratedKeys()
DbAdapter
supportsGeneratedKeys
in interface DbAdapter
public boolean supportsBatchUpdates()
DbAdapter
true
if the target database supports batch updates.
supportsBatchUpdates
in interface DbAdapter
public java.util.Collection<java.lang.String> dropTableStatements(DbEntity table)
DbAdapter
dropTableStatements
in interface DbAdapter
public java.lang.String createTable(DbEntity entity)
DbAdapter
entity
parameter.
createTable
in interface DbAdapter
public java.lang.String createUniqueConstraint(DbEntity source, java.util.Collection<DbAttribute> columns)
DbAdapter
createUniqueConstraint
in interface DbAdapter
public java.lang.String createFkConstraint(DbRelationship rel)
DbAdapter
createFkConstraint
in interface DbAdapter
public java.lang.String[] externalTypesForJdbcType(int type)
DbAdapter
type
. Valid
JDBC types are defined in java.sql.Types.
externalTypesForJdbcType
in interface DbAdapter
public ExtendedTypeMap getExtendedTypes()
DbAdapter
getExtendedTypes
in interface DbAdapter
public PkGenerator getPkGenerator()
getPkGenerator
in interface DbAdapter
public void setPkGenerator(PkGenerator pkGenerator)
public DbAttribute buildAttribute(java.lang.String name, java.lang.String typeName, int type, int size, int precision, boolean allowNulls)
DbAdapter
buildAttribute
in interface DbAdapter
name
- database column nametypeName
- database specific type name, may be used as a hint to determine the
right JDBC type.type
- JDBC column typesize
- database column size (ignored if less than zero)precision
- database column scale, i.e. the number of decimal digits (ignored if
less than zero)allowNulls
- database column nullable parameterpublic void bindParameter(java.sql.PreparedStatement statement, java.lang.Object object, int pos, int sqlType, int precision) throws java.sql.SQLException, java.lang.Exception
DbAdapter
bindParameter
in interface DbAdapter
java.sql.SQLException
java.lang.Exception
public java.lang.String tableTypeForTable()
DbAdapter
DatabaseMetaData.getTableTypes
) for a simple user table.
tableTypeForTable
in interface DbAdapter
public java.lang.String tableTypeForView()
DbAdapter
DatabaseMetaData.getTableTypes
) for a view table.
tableTypeForView
in interface DbAdapter
public MergerFactory mergerFactory()
mergerFactory
in interface DbAdapter
public void createTableAppendColumn(java.lang.StringBuffer sqlBuffer, DbAttribute column)
DbAdapter
StringBuffer
createTableAppendColumn
in interface DbAdapter
sqlBuffer
- the StringBuffer
to append the column type tocolumn
- the DbAttribute
defining the column to append type forpublic QuotingStrategy getQuotingStrategy(boolean isQuoteStrategy)
getQuotingStrategy
in interface DbAdapter
|
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