org.apache.openjpa.jdbc.meta
Class MappingTool

java.lang.Object
  org.apache.openjpa.jdbc.meta.MappingTool

All Implemented Interfaces:

MetaDataModes

public class MappingTool
extends Object
implements MetaDataModes

Tool for manipulating class mappings and associated schema.

Author:

Abe White

Nested Class Summary

static class	MappingTool.Flags Run flags.
static interface	MappingTool.ImportExport Helper used to import and export mapping data.

Field Summary

static String	ACTION_ADD
static String	ACTION_BUILD_SCHEMA
static String	ACTION_DROP
static String	ACTION_EXPORT
static String	ACTION_IMPORT
static String	ACTION_REFRESH
static String	ACTION_VALIDATE
static String[]	ACTIONS
static String	SCHEMA_ACTION_NONE

Fields inherited from interface org.apache.openjpa.meta.MetaDataModes

MODE_ALL, MODE_ANN_MAPPING, MODE_MAPPING, MODE_MAPPING_INIT, MODE_META, MODE_NONE, MODE_QUERY

Constructor Summary

MappingTool(JDBCConfiguration conf, String action, boolean meta)
Constructor.

Method Summary

void	clear() Reset the internal repository.
String	getAction() The action supplied on construction.
boolean	getDropUnusedComponents() Whether schema components that are unused by any mapping will be dropped from this tool's SchemaGroup, and, depending on the schema action, from the database.
boolean	getForeignKeys() Whether foreign keys on existing tables should be manipulated.
boolean	getIgnoreErrors() Whether and SQL errors should cause a failure or just issue a warning.
boolean	getIndexes() Whether indexes on existing tables should be manipulated.
Writer	getMappingWriter() The stream to export the planned mappings to as an XML document.
File	getMetaDataFile() If adding metadata, the metadata file to add to.
boolean	getPrimaryKeys() Whether primary keys on existing tables should be manipulated.
boolean	getReadSchema() Set to true to read the entire schema before mapping.
MappingRepository	getRepository() Return the repository to use to access mapping information.
String	getSchemaAction() The schema modification policy, or none.
SchemaGroup	getSchemaGroup() Return the schema group to use in mapping.
Writer	getSchemaWriter() The stream to export the planned schema to as an XML document.
boolean	getSequences() Whether to manipulate sequences.
boolean	isMetaDataAction() Whether the action works on metadata as well as mappings.
static void	main(String[] arguments) Usage: java org.apache.openjpa.jdbc.meta.MappingTool [option]* [-action/-a <refresh | add | buildSchema | drop | validate | import | export>] <class name | .java file | .class file | .jdo file>* Where the following options are recognized.
void	record() Records the changes that have been made to both the mappings and the associated schema, and clears the tool for further use.
void	run(Class cls) Run the configured action on the given instance.
static boolean	run(JDBCConfiguration conf, String[] args, MappingTool.Flags flags, ClassLoader loader) Run the tool.
static boolean	run(JDBCConfiguration conf, String[] args, Options opts) Run the tool.
void	setDropUnusedComponents(boolean dropUnused) Whether schema components that are unused by any mapping will be dropped from this tool's SchemaGroup, and, depending on the schema action, from the database.
void	setForeignKeys(boolean fks) Whether foreign keys on existing tables should be manipulated.
void	setIgnoreErrors(boolean ignoreErrors) Whether and SQL errors should cause a failure or just issue a warning.
void	setIndexes(boolean indexes) Whether indexes on existing tables should be manipulated.
void	setMappingWriter(Writer mappingWriter) The stream to export the planned mappings to as an XML document.
void	setMetaDataFile(File file) If adding metadata, the metadata file to add to.
void	setPrimaryKeys(boolean pks) Whether primary keys on existing tables should be manipulated.
void	setReadSchema(boolean readSchema) Set to true to read the entire schema before mapping.
void	setRepository(MappingRepository repos) Set the repository to use to access mapping information.
void	setSchemaAction(String schemaAction) The schema modification policy, or none.
void	setSchemaGroup(SchemaGroup schema) Set the schema to use in mapping.
void	setSchemaTool(SchemaTool tool) Set the schema tool to use for schema modification.
void	setSchemaWriter(Writer schemaWriter) The stream to export the planned schema to as an XML document.
void	setSequences(boolean seqs) Whether to manipulate sequences.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SCHEMA_ACTION_NONE

public static final String SCHEMA_ACTION_NONE

See Also:

Constant Field Values

ACTION_ADD

public static final String ACTION_ADD

See Also:

Constant Field Values

ACTION_REFRESH

public static final String ACTION_REFRESH

See Also:

Constant Field Values

ACTION_BUILD_SCHEMA

public static final String ACTION_BUILD_SCHEMA

See Also:

Constant Field Values

ACTION_DROP

public static final String ACTION_DROP

See Also:

Constant Field Values

ACTION_VALIDATE

public static final String ACTION_VALIDATE

See Also:

Constant Field Values

ACTION_EXPORT

public static final String ACTION_EXPORT

See Also:

Constant Field Values

ACTION_IMPORT

public static final String ACTION_IMPORT

See Also:

Constant Field Values

ACTIONS

public static final String[] ACTIONS

Constructor Detail

MappingTool

public MappingTool(JDBCConfiguration conf,
                   String action,
                   boolean meta)

Constructor. Supply configuration and action.

Method Detail

getAction

public String getAction()

The action supplied on construction.

isMetaDataAction

public boolean isMetaDataAction()

Whether the action works on metadata as well as mappings.

getSchemaAction

public String getSchemaAction()

The schema modification policy, or none. See the ACTION constants in SchemaTool. May be a comma-separated list of values. Defaults to SchemaTool.ACTION_ADD.

setSchemaAction

public void setSchemaAction(String schemaAction)

The schema modification policy, or none. See the ACTION constants in SchemaTool. May be a comma-separated list of values. Defaults to SchemaTool.ACTION_ADD.

getReadSchema

public boolean getReadSchema()

Set to true to read the entire schema before mapping. Leaving this option false saves time, but is dangerous when adding new mappings, because without full knowledge of the existing schema the mapping tool might create tables or indexes that conflict with existing components.

setReadSchema

public void setReadSchema(boolean readSchema)

Set to true to read the entire schema before mapping. Leaving this option false saves time, but is dangerous when adding new mappings, because without full knowledge of the existing schema the mapping tool might create tables or indexes that conflict with existing components.

getSequences

public boolean getSequences()

Whether to manipulate sequences. Defaults to true.

setSequences

public void setSequences(boolean seqs)

Whether to manipulate sequences. Defaults to true.

getIndexes

public boolean getIndexes()

Whether indexes on existing tables should be manipulated. Defaults to false.

setIndexes

public void setIndexes(boolean indexes)

Whether indexes on existing tables should be manipulated. Defaults to false.

getForeignKeys

public boolean getForeignKeys()

Whether foreign keys on existing tables should be manipulated. Defaults to false.

setForeignKeys

public void setForeignKeys(boolean fks)

Whether foreign keys on existing tables should be manipulated. Defaults to false.

getPrimaryKeys

public boolean getPrimaryKeys()

Whether primary keys on existing tables should be manipulated. Defaults to false.

setPrimaryKeys

public void setPrimaryKeys(boolean pks)

Whether primary keys on existing tables should be manipulated. Defaults to false.

getDropUnusedComponents

public boolean getDropUnusedComponents()

Whether schema components that are unused by any mapping will be dropped from this tool's SchemaGroup, and, depending on the schema action, from the database. Defaults to true.

setDropUnusedComponents

public void setDropUnusedComponents(boolean dropUnused)

Whether schema components that are unused by any mapping will be dropped from this tool's SchemaGroup, and, depending on the schema action, from the database. Defaults to true.

setIgnoreErrors

public void setIgnoreErrors(boolean ignoreErrors)

Whether and SQL errors should cause a failure or just issue a warning.

getIgnoreErrors

public boolean getIgnoreErrors()

Whether and SQL errors should cause a failure or just issue a warning.

setSchemaTool

public void setSchemaTool(SchemaTool tool)

Set the schema tool to use for schema modification.

getSchemaWriter

public Writer getSchemaWriter()

The stream to export the planned schema to as an XML document. If non-null, then the database schema will not be altered.

setSchemaWriter

public void setSchemaWriter(Writer schemaWriter)

The stream to export the planned schema to as an XML document. If non-null, then the database schema will not be altered.

getMappingWriter

public Writer getMappingWriter()

The stream to export the planned mappings to as an XML document. If non-null, then the mapping repository will not be altered.

setMappingWriter

public void setMappingWriter(Writer mappingWriter)

The stream to export the planned mappings to as an XML document. If non-null, then the mapping repository will not be altered.

getMetaDataFile

public File getMetaDataFile()

If adding metadata, the metadata file to add to.

setMetaDataFile

public void setMetaDataFile(File file)

If adding metadata, the metadata file to add to.

getRepository

public MappingRepository getRepository()

Return the repository to use to access mapping information. Defaults to a new MappingRepository.

setRepository

public void setRepository(MappingRepository repos)

Set the repository to use to access mapping information.

getSchemaGroup

public SchemaGroup getSchemaGroup()

Return the schema group to use in mapping. If none has been set, the schema will be generated from the database.

setSchemaGroup

public void setSchemaGroup(SchemaGroup schema)

Set the schema to use in mapping.

clear

public void clear()

Reset the internal repository. This is called automatically after every record().

record

public void record()

Records the changes that have been made to both the mappings and the associated schema, and clears the tool for further use. This also involves clearing the internal mapping repository.

run

public void run(Class cls)

Run the configured action on the given instance.

main

public static void main(String[] arguments)
                 throws IOException,
                        SQLException

Usage: java org.apache.openjpa.jdbc.meta.MappingTool [option]* [-action/-a <refresh | add | buildSchema | drop | validate | import | export>] <class name | .java file | .class file | .jdo file>* Where the following options are recognized.

• -properties/-p <properties file or resource>: The path or resource name of a OpenJPA properties file containing information as outlined in OpenJPAConfiguration. Optional.
• -<property name> <property value>: All bean properties of the OpenJPA JDBCConfiguration can be set by using their names and supplying a value. For example: -licenseKey adslfja83r3lkadf
• -file/-f <stdout | output file or resource>: Use this option to write the planned mappings to an XML document rather than store them in the repository. This option also specifies the metadata file to write to if using the add action with the -meta true flag, or the file to dump to if using the export action.
• -schemaAction/-sa <schema action | none>: The SchemaTool defines the actions possible. The actions will apply to all schema components used by the mappings involved. Unless you are running the mapping tool on all of your persistent types at once, be careful running schema actions that can drop data. It is possible to accidentally drop schema components that are used by classes you aren't currently running the tool over. The action defaults to add.
• -schemaFile/-sf <stdout | output file or resource>: Use this option to write the planned schema to an XML document rather than modify the data store.
• -sqlFile/-sql <stdout | output file or resource>: Use this option to write the planned schema changes as a SQL script rather than modifying the data store.
• -dropTables/-dt <true/t | false/f>: Corresponds to the same-named option in the SchemaTool.
• -dropSequences/-dsq <true/t | false/f>: Corresponds to the same-named option in the SchemaTool.
• -openjpaTables/-kt <true/t | false/f>: Corresponds to the same-named option in the SchemaTool.
• -ignoreErrors/-i <true/t | false/f>: Corresponds to the same-named option in the SchemaTool.
• -readSchema/-rs <true/t | false/f>: Set this to true to read the entire existing schema (even when false the parts of the schema used by classes the tool is run on will still be read). Turning on schema reading can ensure that no naming conflicts will occur, but it can take a long time.
• -primaryKeys/-pk <true/t | false/f>: Whether primary keys on existing tables are manipulated. Defaults to false.
• -foreignKeys/-fk <true/t | false/f>: Whether foreign keys on existing tables are manipulated. Defaults to false.
• -indexes/-ix <true/t | false/f>: Whether indexes on existing tables are manipulated. Defaults to false.
• -sequences/-sq <true/t | false/f>: Whether sequences are manipulated. Defaults to true.
• -schemas/-s <schema and table names>: A list of schemas and/or tables to read. Corresponds to the same-named option in the SchemaGenerator. This option is ignored if readSchema is false.
• -meta/-m <true/t | false/f>: Whether the given action applies to metadata as well as mappings.

The various actions are as follows.

• refresh: Bring the mapping information up-to-date with the class definitions. OpenJPA will attempt to use any provided mapping information, and fill in missing information. If the provided information conflicts with the class definition, the conflicting information will be discarded and the class/field will be re-mapped to new columns/tables. This is the default action.
• add: If used with the -meta option, adds new default metadata for the given class(es). Otherwise, brings the mapping information up-to-date with the class definitions. OpenJPA will attempt to use any provided mapping information, and fill in missing information. OpenJPA will fail if the provided information conflicts with the class definition.
• buildSchema: Create the schema matching the existing mappings for the given class(es). Any invalid mapping information will cause an exception.
• drop: Delete mappings for the given classes. If used with the -meta option, also deletes metadata.
• validate: Validate the given mappings. The mapping repository and schema will not be affected.
• import: Import mappings from an XML document and store them as the current system mappings.
• export: Dump the current mappings for the given classes to an XML document specified by the file option.
If used with the -meta option, the metadata will be included in the export.

Each class supplied as an argument must have valid metadata. If no class arguments are given, the tool runs on all metadata files in the CLASSPATH. Examples:

• Refresh the mappings for given package, without dropping any schema components:
  java org.apache.openjpa.jdbc.meta.MappingTool mypackage.jdo
• Refresh the mappings for all persistent classes in the classpath, dropping any unused columns and even tables:
  java org.apache.openjpa.jdbc.meta.MappingTool -sa refresh -dt true
• Make sure the mappings you've created by hand match the object model and schema:
  java org.apache.openjpa.jbdc.meta.MappingTool -a validate Person.java
• Remove the recorded mapping for a given class:
  java org.apache.openjpa.jbdc.meta.MappingTool -a drop Person.java
• Record the current mappings in an XML file:
  java org.apache.openjpa.jdbc.meta.MappingTool -f mypackage.orm -a export mypackage.jdo

Throws:

IOException

SQLException

run

public static boolean run(JDBCConfiguration conf,
                          String[] args,
                          Options opts)
                   throws IOException,
                          SQLException

Run the tool. Returns false if invalid options are given.

Throws:

IOException

SQLException

See Also:

main(java.lang.String[])

run

public static boolean run(JDBCConfiguration conf,
                          String[] args,
                          MappingTool.Flags flags,
                          ClassLoader loader)
                   throws IOException,
                          SQLException

Run the tool. Return false if an invalid option was given.

Throws:

IOException

SQLException