Environment (Hibernate API Documentation) - Hibernate 2.1.8 正式版 API 英文文档

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net.sf.hibernate.cfg
Class Environment

java.lang.Object
  net.sf.hibernate.cfg.Environment

public final class Environment
extends Object

Provides access to configuration info passed in Properties objects.

Hibernate has two property scopes:

Factory-level properties may be passed to the SessionFactory when it instantiated. Each instance might have different property values. If no properties are specified, the factory calls Environment.getProperties().
System-level properties are shared by all factory instances and are always determined by the Environment properties.

The only system-level properties are

hibernate.jdbc.use_streams_for_binary
hibernate.cglib.use_reflection_optimizer

Environment properties are populated by calling System.getProperties() and then from a resource named /hibernate.properties if it exists. System properties override properties specified in hibernate.properties.

The SessionFactory is controlled by the following properties. Properties may be either be System properties, properties defined in a resource named /hibernate.properties or an instance of java.util.Properties passed to Configuration.buildSessionFactory()

property	meaning
`hibernate.dialect`	classname of `net.sf.hibernate.dialect.Dialect` subclass
`hibernate.cache.provider_class`	classname of `net.sf.hibernate.cache.CacheProvider` subclass (if not specified JCS is used)
`hibernate.connection.provider_class`	classname of `net.sf.hibernate.connection.ConnectionProvider` subclass (if not specified hueristics are used)
`hibernate.connection.username`	database username
`hibernate.connection.password`	database password
`hibernate.connection.url`	JDBC URL (when using `java.sql.DriverManager`)
`hibernate.connection.driver_class`	classname of JDBC driver
`hibernate.connection.isolation`	JDBC transaction isolation level (only when using `java.sql.DriverManager`)
`hibernate.connection.pool_size`	the maximum size of the connection pool (only when using `java.sql.DriverManager`)
`hibernate.connection.datasource`	databasource JNDI name (when using `javax.sql.Datasource`)
`hibernate.jndi.url`	JNDI `InitialContext` URL
`hibernate.jndi.class`	JNDI `InitialContext` classname
`hibernate.max_fetch_depth`	maximum depth of outer join fetching
`hibernate.jdbc.batch_size`	enable use of JDBC2 batch API for drivers which support it
`hibernate.jdbc.fetch_size`	set the JDBC fetch size
`hibernate.jdbc.use_scrollable_resultset`	enable use of JDBC2 scrollable resultsets (you only need this specify this property when using user supplied connections)
`hibernate.jdbc.use_getGeneratedKeys`	enable use of JDBC3 PreparedStatement.getGeneratedKeys() to retrieve natively generated keys after insert. Requires JDBC3+ driver and JRE1.4+
`hibernate.hbm2ddl.auto`	enable auto DDL export
`hibernate.default_schema`	use given schema name for unqualified tables (always optional)
`hibernate.session_factory_name`	If set, the factory attempts to bind this name to itself in the JNDI context. This name is also used to support cross JVM `Session` (de)serialization.
`hibernate.transaction.manager_lookup_class`	classname of `net.sf.hibernate.transaction.TransactionManagerLookup` implementor
`hibernate.transaction.factory_class`	the factory to use for instantiating `Transaction`s. (Defaults to `JDBCTransactionFactory`.)
`hibernate.query.substitutions`	query language token substitutions

Author:: Gavin King
See Also:: SessionFactory

Field Summary

static String BATCH_VERSIONED_DATA
          Should versioned data be included in batching?

static String C3P0_ACQUIRE_INCREMENT
          Number of connections acquired when pool is exhausted

static String C3P0_IDLE_TEST_PERIOD
          Idle time before a C3P0 pooled connection is validated

static String C3P0_MAX_SIZE
          Maximum size of C3P0 connection pool

static String C3P0_MAX_STATEMENTS
          Maximum size of C3P0 statement cache

static String C3P0_MIN_SIZE
          Minimum size of C3P0 connection pool

static String C3P0_TIMEOUT
          Maximum idle time for C3P0 connection pool

static String C3P0_VALIDATE_CONNECTION
          Deprecated. use C3P0_IDLE_TEST_PERIOD

static String CACHE_PROVIDER
          The CacheProvider implementation class

static String CACHE_REGION_PREFIX
          The CacheProvider region name prefix

static String CONNECTION_PREFIX
          prefix for arbitrary JDBC connection properties

static String CONNECTION_PROVIDER
          ConnectionProvider implementor to use when obtaining connections

static String DATASOURCE
          java.sql.Datasource JNDI name

static String DBCP_MAXACTIVE
          Maximum number of checked out connections for DBCP connection pool

static String DBCP_MAXIDLE
          Maximum number of idle connections for DBCP connection pool

static String DBCP_MAXWAIT
          Maximum idle time for connections in DBCP connection pool (ms)

static String DBCP_PS_MAXACTIVE
          Maximum number of checked out statements for DBCP

static String DBCP_PS_MAXIDLE
          Maximum number of idle statements for DBCP

static String DBCP_PS_MAXWAIT
          Maximum idle time for statements in DBCP (ms)

static String DBCP_PS_WHENEXHAUSTED
          Action to take in case of an exhausted DBCP statement pool ( 0 = fail, 1 = block, 2= grow)

static String DBCP_VALIDATION_ONBORROW
          Validate connection when borrowing connection from pool (optional, true or false)

static String DBCP_VALIDATION_ONRETURN
          Validate connection when returning connection to pool (optional, true or false)

static String DBCP_VALIDATION_QUERY
          Query to execute for connection validation (optional, requires either DBCP_VALIDATION_ONBORROW or DBCP_VALIDATION_ONRETURN)

static String DBCP_WHENEXHAUSTED
          Action to take in case of an exhausted DBCP connection pool ( 0 = fail, 1 = block, 2= grow)

static String DEFAULT_SCHEMA
          A default database schema (owner) name to use for unqualified tablenames

static String DIALECT
          Hibernate SQL Dialect class

static String DRIVER
          JDBC driver class

static String HBM2DDL_AUTO
          Auto export/update schema using hbm2ddl tool.

static String ISOLATION
          JDBC transaction isolation level

static String JNDI_CLASS
          JNDI initial context class, Context.INITIAL_CONTEXT_FACTORY

static String JNDI_PREFIX
          prefix for arbitrary JNDI InitialContext properties

static String JNDI_URL
          JNDI provider URL, Context.PROVIDER_URL

static String MAX_FETCH_DEPTH
          Maximum depth of outerjoin fetching

static String OUTPUT_STYLESHEET
          An XSLT resource used to generate "custom" XML

static String PASS
          JDBC password

static String POOL_SIZE
          Maximum number of inactive connections for Hibernate's connection pool

static String PROXOOL_EXISTING_POOL
          Proxool property to configure the Proxool Provider from an already existing pool (true / false)

static String PROXOOL_POOL_ALIAS
          Proxool property with the Proxool pool alias to use (Required for PROXOOL_EXISTING_POOL, PROXOOL_PROPERTIES, or PROXOOL_XML)

static String PROXOOL_PREFIX
          Proxool/Hibernate property prefix

static String PROXOOL_PROPERTIES
          Proxool property to configure the Proxool Provider using a properties file (/path/to/proxool.properties)

static String PROXOOL_XML
          Proxool property to configure the Proxool Provider using an XML (/path/to/file.xml)

static String QUERY_CACHE_FACTORY
          The QueryCacheFactory implementation class.

static String QUERY_IMPORTS
          Deprecated.

static String QUERY_SUBSTITUTIONS
          A comma-seperated list of token substitutions to use when translating a Hibernate query to SQL

static String SESSION_FACTORY_NAME
          JNDI name to bind to SessionFactory

static String SHOW_SQL
          Enable logging of generated SQL to the console

static String SQL_EXCEPTION_CONVERTER
          The SQLExceptionConverter to use for converting SQLExceptions to Hibernate's JDBCException hierarchy.

static String STATEMENT_BATCH_SIZE
          Maximum JDBC batch size.

static String STATEMENT_CACHE_SIZE
          Deprecated. Hibernate no longer has a built-in prepared statement cache

static String STATEMENT_FETCH_SIZE
          Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed.

static String TRANSACTION_MANAGER_STRATEGY
          TransactionManagerLookup implementor to use for obtaining the TransactionManager

static String TRANSACTION_STRATEGY
          TransactionFactory implementor to use for creating Transactions

static String URL
          JDBC URL

static String USE_GET_GENERATED_KEYS
          Tells the JDBC driver to attempt to retrieve row Id with the JDBC 3.0 PreparedStatement.getGeneratedKeys() method.

static String USE_JDBC_BATCH
          Deprecated.

static String USE_MINIMAL_PUTS
          Optimize the cache for mimimal puts instead of minimal gets

static String USE_OUTER_JOIN
          Deprecated. use hibernate.max_fetch_depth=0

static String USE_QUERY_CACHE
          Should query caching be truned on?

static String USE_REFLECTION_OPTIMIZER
          Use CGLIB MetaClass to optimize property access

static String USE_SCROLLABLE_RESULTSET
          Use JDBC scrollable ResultSets.

static String USE_STREAMS_FOR_BINARY
          Use java.io streams to read / write binary data from / to JDBC

static String USER
          JDBC user

static String USER_TRANSACTION
          JNDI name of JTA UserTransaction object

static String VERSION


static String WRAP_RESULT_SETS
          Should Hibernate wrap result sets in order to speed up column name lookups.

Method Summary

static Properties getProperties()
          Return System properties, extended by any properties specified in hibernate.properties.

static String isolationLevelToString(int isolation)
          Get the name of a JDBC transaction isolation level

static boolean jvmHasJDK14Timestamp()
          Does this JVM handle Timestamp in the JDK 1.4 compliant way?

static boolean jvmHasTimestampBug()
          Does this JVM have the IBM JDK 1.3.1.

static boolean jvmSupportsGetGeneratedKeys()


static boolean jvmSupportsLinkedHashCollections()
          Does this JVM support LinkedHashSet, LinkedHashMap.

static boolean jvmSupportsProxies()
          Does this JVM support dynamic proxies.

static boolean useReflectionOptimizer()
          Should we use CGLIB reflection optimizer.

static boolean useStreamsForBinary()
          Should we use streams to bind binary types to JDBC IN parameters.

static void verifyProperties(Properties props)
          Issues warnings to the user when any obsolete property names are used.

Methods inherited from class java.lang.Object

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

Field Detail

VERSION

public static final String VERSION

See Also:: Constant Field Values

CONNECTION_PROVIDER

public static final String CONNECTION_PROVIDER

ConnectionProvider implementor to use when obtaining connections

See Also:: Constant Field Values

DRIVER

public static final String DRIVER

JDBC driver class

See Also:: Constant Field Values

ISOLATION

public static final String ISOLATION

JDBC transaction isolation level

See Also:: Constant Field Values

URL

public static final String URL

JDBC URL

See Also:: Constant Field Values

USER

public static final String USER

JDBC user

See Also:: Constant Field Values

PASS

public static final String PASS

JDBC password

See Also:: Constant Field Values

POOL_SIZE

public static final String POOL_SIZE

Maximum number of inactive connections for Hibernate's connection pool

See Also:: Constant Field Values

DATASOURCE

public static final String DATASOURCE

java.sql.Datasource JNDI name

See Also:: Constant Field Values

CONNECTION_PREFIX

public static final String CONNECTION_PREFIX

prefix for arbitrary JDBC connection properties

See Also:: Constant Field Values

STATEMENT_CACHE_SIZE

public static final String STATEMENT_CACHE_SIZE

Deprecated. Hibernate no longer has a built-in prepared statement cache

Maximum size for Hibernate's statement cache

See Also:: Constant Field Values

JNDI_CLASS

public static final String JNDI_CLASS

JNDI initial context class, Context.INITIAL_CONTEXT_FACTORY

See Also:: Constant Field Values

JNDI_URL

public static final String JNDI_URL

JNDI provider URL, Context.PROVIDER_URL

See Also:: Constant Field Values

JNDI_PREFIX

public static final String JNDI_PREFIX

prefix for arbitrary JNDI InitialContext properties

See Also:: Constant Field Values

SESSION_FACTORY_NAME

public static final String SESSION_FACTORY_NAME

JNDI name to bind to SessionFactory

See Also:: Constant Field Values

DIALECT

public static final String DIALECT

Hibernate SQL Dialect class

See Also:: Constant Field Values

DEFAULT_SCHEMA

public static final String DEFAULT_SCHEMA

A default database schema (owner) name to use for unqualified tablenames

See Also:: Constant Field Values

SHOW_SQL

public static final String SHOW_SQL

Enable logging of generated SQL to the console

See Also:: Constant Field Values

USE_OUTER_JOIN

public static final String USE_OUTER_JOIN

Deprecated. use hibernate.max_fetch_depth=0

Enable deep fetching using outerjoins

See Also:: Constant Field Values

MAX_FETCH_DEPTH

public static final String MAX_FETCH_DEPTH

Maximum depth of outerjoin fetching

See Also:: Constant Field Values

USE_STREAMS_FOR_BINARY

public static final String USE_STREAMS_FOR_BINARY

Use java.io streams to read / write binary data from / to JDBC

See Also:: Constant Field Values

USE_SCROLLABLE_RESULTSET

public static final String USE_SCROLLABLE_RESULTSET

Use JDBC scrollable ResultSets. This property is only necessary when there is no ConnectionProvider, ie. the user is supplying JDBC connections.

See Also:: Constant Field Values

USE_GET_GENERATED_KEYS

public static final String USE_GET_GENERATED_KEYS

Tells the JDBC driver to attempt to retrieve row Id with the JDBC 3.0 PreparedStatement.getGeneratedKeys() method. In general, performance will be better if this property is set to true and the underlying JDBC driver supports getGeneratedKeys().

See Also:: Constant Field Values

STATEMENT_FETCH_SIZE

public static final String STATEMENT_FETCH_SIZE

Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed. If 0, JDBC driver default settings will be used.

See Also:: Constant Field Values

STATEMENT_BATCH_SIZE

public static final String STATEMENT_BATCH_SIZE

Maximum JDBC batch size. A nonzero value enables batch updates.

See Also:: Constant Field Values

BATCH_VERSIONED_DATA

public static final String BATCH_VERSIONED_DATA

Should versioned data be included in batching?

See Also:: Constant Field Values

OUTPUT_STYLESHEET

public static final String OUTPUT_STYLESHEET

An XSLT resource used to generate "custom" XML

See Also:: Constant Field Values

C3P0_MAX_SIZE

public static final String C3P0_MAX_SIZE

Maximum size of C3P0 connection pool

See Also:: Constant Field Values

C3P0_MIN_SIZE

public static final String C3P0_MIN_SIZE

Minimum size of C3P0 connection pool

See Also:: Constant Field Values

C3P0_TIMEOUT

public static final String C3P0_TIMEOUT

Maximum idle time for C3P0 connection pool

See Also:: Constant Field Values

C3P0_MAX_STATEMENTS

public static final String C3P0_MAX_STATEMENTS

Maximum size of C3P0 statement cache

See Also:: Constant Field Values

C3P0_ACQUIRE_INCREMENT

public static final String C3P0_ACQUIRE_INCREMENT

Number of connections acquired when pool is exhausted

See Also:: Constant Field Values

C3P0_IDLE_TEST_PERIOD

public static final String C3P0_IDLE_TEST_PERIOD

Idle time before a C3P0 pooled connection is validated

See Also:: Constant Field Values

C3P0_VALIDATE_CONNECTION

public static final String C3P0_VALIDATE_CONNECTION

Deprecated. use C3P0_IDLE_TEST_PERIOD

Should we validate the connection on checkout.

See Also:: Constant Field Values

DBCP_MAXACTIVE

public static final String DBCP_MAXACTIVE

Maximum number of checked out connections for DBCP connection pool

See Also:: Constant Field Values

DBCP_MAXIDLE

public static final String DBCP_MAXIDLE

Maximum number of idle connections for DBCP connection pool

See Also:: Constant Field Values

DBCP_MAXWAIT

public static final String DBCP_MAXWAIT

Maximum idle time for connections in DBCP connection pool (ms)

See Also:: Constant Field Values

DBCP_WHENEXHAUSTED

public static final String DBCP_WHENEXHAUSTED

Action to take in case of an exhausted DBCP connection pool ( 0 = fail, 1 = block, 2= grow)

See Also:: Constant Field Values

DBCP_VALIDATION_ONBORROW

public static final String DBCP_VALIDATION_ONBORROW

Validate connection when borrowing connection from pool (optional, true or false)

See Also:: Constant Field Values

DBCP_VALIDATION_ONRETURN

public static final String DBCP_VALIDATION_ONRETURN

Validate connection when returning connection to pool (optional, true or false)

See Also:: Constant Field Values

DBCP_VALIDATION_QUERY

public static final String DBCP_VALIDATION_QUERY

Query to execute for connection validation (optional, requires either DBCP_VALIDATION_ONBORROW or DBCP_VALIDATION_ONRETURN)

See Also:: Constant Field Values

DBCP_PS_MAXACTIVE

public static final String DBCP_PS_MAXACTIVE

Maximum number of checked out statements for DBCP

See Also:: Constant Field Values

DBCP_PS_MAXIDLE

public static final String DBCP_PS_MAXIDLE

Maximum number of idle statements for DBCP

See Also:: Constant Field Values

DBCP_PS_MAXWAIT

public static final String DBCP_PS_MAXWAIT

Maximum idle time for statements in DBCP (ms)

See Also:: Constant Field Values

DBCP_PS_WHENEXHAUSTED

public static final String DBCP_PS_WHENEXHAUSTED

Action to take in case of an exhausted DBCP statement pool ( 0 = fail, 1 = block, 2= grow)

See Also:: Constant Field Values

PROXOOL_PREFIX

public static final String PROXOOL_PREFIX

Proxool/Hibernate property prefix

See Also:: Constant Field Values

PROXOOL_XML

public static final String PROXOOL_XML

Proxool property to configure the Proxool Provider using an XML (/path/to/file.xml)

See Also:: Constant Field Values

PROXOOL_PROPERTIES

public static final String PROXOOL_PROPERTIES

Proxool property to configure the Proxool Provider using a properties file (/path/to/proxool.properties)

See Also:: Constant Field Values

PROXOOL_EXISTING_POOL

public static final String PROXOOL_EXISTING_POOL

Proxool property to configure the Proxool Provider from an already existing pool (true / false)

See Also:: Constant Field Values

PROXOOL_POOL_ALIAS

public static final String PROXOOL_POOL_ALIAS

Proxool property with the Proxool pool alias to use (Required for PROXOOL_EXISTING_POOL, PROXOOL_PROPERTIES, or PROXOOL_XML)

See Also:: Constant Field Values

TRANSACTION_STRATEGY

public static final String TRANSACTION_STRATEGY

TransactionFactory implementor to use for creating Transactions

See Also:: Constant Field Values

TRANSACTION_MANAGER_STRATEGY

public static final String TRANSACTION_MANAGER_STRATEGY

TransactionManagerLookup implementor to use for obtaining the TransactionManager

See Also:: Constant Field Values

USER_TRANSACTION

public static final String USER_TRANSACTION

JNDI name of JTA UserTransaction object

See Also:: Constant Field Values

CACHE_PROVIDER

public static final String CACHE_PROVIDER

The CacheProvider implementation class

See Also:: Constant Field Values

USE_QUERY_CACHE

public static final String USE_QUERY_CACHE

Should query caching be truned on?

See Also:: Constant Field Values

QUERY_CACHE_FACTORY

public static final String QUERY_CACHE_FACTORY

The QueryCacheFactory implementation class.

See Also:: Constant Field Values

CACHE_REGION_PREFIX

public static final String CACHE_REGION_PREFIX

The CacheProvider region name prefix

See Also:: Constant Field Values

USE_MINIMAL_PUTS

public static final String USE_MINIMAL_PUTS

Optimize the cache for mimimal puts instead of minimal gets

See Also:: Constant Field Values

USE_REFLECTION_OPTIMIZER

public static final String USE_REFLECTION_OPTIMIZER

Use CGLIB MetaClass to optimize property access

See Also:: Constant Field Values

QUERY_SUBSTITUTIONS

public static final String QUERY_SUBSTITUTIONS

A comma-seperated list of token substitutions to use when translating a Hibernate query to SQL

See Also:: Constant Field Values

QUERY_IMPORTS

public static final String QUERY_IMPORTS

Deprecated.

A comma-seperated list of packages that need not be specified in a query

See Also:: Constant Field Values

HBM2DDL_AUTO

public static final String HBM2DDL_AUTO

Auto export/update schema using hbm2ddl tool. Valid values are update, create and create-drop.

See Also:: Constant Field Values

SQL_EXCEPTION_CONVERTER

public static final String SQL_EXCEPTION_CONVERTER

The SQLExceptionConverter to use for converting SQLExceptions to Hibernate's JDBCException hierarchy. The default is to use the configured Dialect's preferred SQLExceptionConverter.

See Also:: Constant Field Values

WRAP_RESULT_SETS

public static final String WRAP_RESULT_SETS

Should Hibernate wrap result sets in order to speed up column name lookups.

See Also:: Constant Field Values

USE_JDBC_BATCH

public static final String USE_JDBC_BATCH

Deprecated.

Use JDBC2 batch updates

See Also:: Constant Field Values

Method Detail

verifyProperties

public static void verifyProperties(Properties props)

Issues warnings to the user when any obsolete property names are used.

jvmSupportsProxies

public static boolean jvmSupportsProxies()

Does this JVM support dynamic proxies. (Now return true because CGLIB proxies work on all supported JDK)

jvmHasTimestampBug

public static boolean jvmHasTimestampBug()

Does this JVM have the IBM JDK 1.3.1. The bug is new Timestamp(x).getTime()!=x.

jvmHasJDK14Timestamp

public static boolean jvmHasJDK14Timestamp()

Does this JVM handle Timestamp in the JDK 1.4 compliant way?

jvmSupportsLinkedHashCollections

public static boolean jvmSupportsLinkedHashCollections()

Does this JVM support LinkedHashSet, LinkedHashMap.

See Also:: LinkedHashSet, LinkedHashMap

jvmSupportsGetGeneratedKeys

public static boolean jvmSupportsGetGeneratedKeys()

useStreamsForBinary

public static boolean useStreamsForBinary()

Should we use streams to bind binary types to JDBC IN parameters. Property hibernate.jdbc.use_streams_for_binary.

See Also:: USE_STREAMS_FOR_BINARY

useReflectionOptimizer

public static boolean useReflectionOptimizer()

Should we use CGLIB reflection optimizer. Property hibernate.jdbc.use_refection_optimizer.

See Also:: USE_REFLECTION_OPTIMIZER

getProperties

public static Properties getProperties()

Return System properties, extended by any properties specified in hibernate.properties.

Returns:: Properties

isolationLevelToString

public static String isolationLevelToString(int isolation)

Get the name of a JDBC transaction isolation level

Parameters:: isolation - as defined by java.sql.Connection
Returns:: a human-readable name
See Also:: Connection

Overview

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Field Summary
`static String`	`BATCH_VERSIONED_DATA` Should versioned data be included in batching?
`static String`	`C3P0_ACQUIRE_INCREMENT` Number of connections acquired when pool is exhausted
`static String`	`C3P0_IDLE_TEST_PERIOD` Idle time before a C3P0 pooled connection is validated
`static String`	`C3P0_MAX_SIZE` Maximum size of C3P0 connection pool
`static String`	`C3P0_MAX_STATEMENTS` Maximum size of C3P0 statement cache
`static String`	`C3P0_MIN_SIZE` Minimum size of C3P0 connection pool
`static String`	`C3P0_TIMEOUT` Maximum idle time for C3P0 connection pool
`static String`	`C3P0_VALIDATE_CONNECTION` Deprecated. use `C3P0_IDLE_TEST_PERIOD`
`static String`	`CACHE_PROVIDER` The `CacheProvider` implementation class
`static String`	`CACHE_REGION_PREFIX` The `CacheProvider` region name prefix
`static String`	`CONNECTION_PREFIX` prefix for arbitrary JDBC connection properties
`static String`	`CONNECTION_PROVIDER` `ConnectionProvider` implementor to use when obtaining connections
`static String`	`DATASOURCE` `java.sql.Datasource` JNDI name
`static String`	`DBCP_MAXACTIVE` Maximum number of checked out connections for DBCP connection pool
`static String`	`DBCP_MAXIDLE` Maximum number of idle connections for DBCP connection pool
`static String`	`DBCP_MAXWAIT` Maximum idle time for connections in DBCP connection pool (ms)
`static String`	`DBCP_PS_MAXACTIVE` Maximum number of checked out statements for DBCP
`static String`	`DBCP_PS_MAXIDLE` Maximum number of idle statements for DBCP
`static String`	`DBCP_PS_MAXWAIT` Maximum idle time for statements in DBCP (ms)
`static String`	`DBCP_PS_WHENEXHAUSTED` Action to take in case of an exhausted DBCP statement pool ( 0 = fail, 1 = block, 2= grow)
`static String`	`DBCP_VALIDATION_ONBORROW` Validate connection when borrowing connection from pool (optional, true or false)
`static String`	`DBCP_VALIDATION_ONRETURN` Validate connection when returning connection to pool (optional, true or false)
`static String`	`DBCP_VALIDATION_QUERY` Query to execute for connection validation (optional, requires either `DBCP_VALIDATION_ONBORROW` or `DBCP_VALIDATION_ONRETURN`)
`static String`	`DBCP_WHENEXHAUSTED` Action to take in case of an exhausted DBCP connection pool ( 0 = fail, 1 = block, 2= grow)
`static String`	`DEFAULT_SCHEMA` A default database schema (owner) name to use for unqualified tablenames
`static String`	`DIALECT` Hibernate SQL `Dialect` class
`static String`	`DRIVER` JDBC driver class
`static String`	`HBM2DDL_AUTO` Auto export/update schema using hbm2ddl tool.
`static String`	`ISOLATION` JDBC transaction isolation level
`static String`	`JNDI_CLASS` JNDI initial context class, `Context.INITIAL_CONTEXT_FACTORY`
`static String`	`JNDI_PREFIX` prefix for arbitrary JNDI `InitialContext` properties
`static String`	`JNDI_URL` JNDI provider URL, `Context.PROVIDER_URL`
`static String`	`MAX_FETCH_DEPTH` Maximum depth of outerjoin fetching
`static String`	`OUTPUT_STYLESHEET` An XSLT resource used to generate "custom" XML
`static String`	`PASS` JDBC password
`static String`	`POOL_SIZE` Maximum number of inactive connections for Hibernate's connection pool
`static String`	`PROXOOL_EXISTING_POOL` Proxool property to configure the Proxool Provider from an already existing pool (`true` / `false`)
`static String`	`PROXOOL_POOL_ALIAS` Proxool property with the Proxool pool alias to use (Required for `PROXOOL_EXISTING_POOL`, `PROXOOL_PROPERTIES`, or `PROXOOL_XML`)
`static String`	`PROXOOL_PREFIX` Proxool/Hibernate property prefix
`static String`	`PROXOOL_PROPERTIES` Proxool property to configure the Proxool Provider using a properties file (`/path/to/proxool.properties`)
`static String`	`PROXOOL_XML` Proxool property to configure the Proxool Provider using an XML (`/path/to/file.xml`)
`static String`	`QUERY_CACHE_FACTORY` The `QueryCacheFactory` implementation class.
`static String`	`QUERY_IMPORTS` Deprecated.
`static String`	`QUERY_SUBSTITUTIONS` A comma-seperated list of token substitutions to use when translating a Hibernate query to SQL
`static String`	`SESSION_FACTORY_NAME` JNDI name to bind to `SessionFactory`
`static String`	`SHOW_SQL` Enable logging of generated SQL to the console
`static String`	`SQL_EXCEPTION_CONVERTER` The `SQLExceptionConverter` to use for converting SQLExceptions to Hibernate's JDBCException hierarchy.
`static String`	`STATEMENT_BATCH_SIZE` Maximum JDBC batch size.
`static String`	`STATEMENT_CACHE_SIZE` Deprecated. Hibernate no longer has a built-in prepared statement cache
`static String`	`STATEMENT_FETCH_SIZE` Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed.
`static String`	`TRANSACTION_MANAGER_STRATEGY` `TransactionManagerLookup` implementor to use for obtaining the `TransactionManager`
`static String`	`TRANSACTION_STRATEGY` `TransactionFactory` implementor to use for creating `Transaction`s
`static String`	`URL` JDBC URL
`static String`	`USE_GET_GENERATED_KEYS` Tells the JDBC driver to attempt to retrieve row Id with the JDBC 3.0 PreparedStatement.getGeneratedKeys() method.
`static String`	`USE_JDBC_BATCH` Deprecated.
`static String`	`USE_MINIMAL_PUTS` Optimize the cache for mimimal puts instead of minimal gets
`static String`	`USE_OUTER_JOIN` Deprecated. use `hibernate.max_fetch_depth=0`
`static String`	`USE_QUERY_CACHE` Should query caching be truned on?
`static String`	`USE_REFLECTION_OPTIMIZER` Use CGLIB `MetaClass` to optimize property access
`static String`	`USE_SCROLLABLE_RESULTSET` Use JDBC scrollable `ResultSet`s.
`static String`	`USE_STREAMS_FOR_BINARY` Use `java.io` streams to read / write binary data from / to JDBC
`static String`	`USER` JDBC user
`static String`	`USER_TRANSACTION` JNDI name of JTA `UserTransaction` object
`static String`	`VERSION`
`static String`	`WRAP_RESULT_SETS` Should Hibernate wrap result sets in order to speed up column name lookups.

Method Summary
`static Properties`	`getProperties()` Return `System` properties, extended by any properties specified in `hibernate.properties`.
`static String`	`isolationLevelToString(int isolation)` Get the name of a JDBC transaction isolation level
`static boolean`	`jvmHasJDK14Timestamp()` Does this JVM handle `Timestamp` in the JDK 1.4 compliant way?
`static boolean`	`jvmHasTimestampBug()` Does this JVM have the IBM JDK 1.3.1.
`static boolean`	`jvmSupportsGetGeneratedKeys()`
`static boolean`	`jvmSupportsLinkedHashCollections()` Does this JVM support `LinkedHashSet`, `LinkedHashMap`.
`static boolean`	`jvmSupportsProxies()` Does this JVM support dynamic proxies.
`static boolean`	`useReflectionOptimizer()` Should we use CGLIB reflection optimizer.
`static boolean`	`useStreamsForBinary()` Should we use streams to bind binary types to JDBC IN parameters.
`static void`	`verifyProperties(Properties props)` Issues warnings to the user when any obsolete property names are used.

Environment (Hibernate API Documentation) - Hibernate 2.1.8 正式版 API 英文文档

net.sf.hibernate.cfg Class Environment

VERSION

CONNECTION_PROVIDER

DRIVER

ISOLATION

URL

USER

PASS

POOL_SIZE

DATASOURCE

CONNECTION_PREFIX

STATEMENT_CACHE_SIZE

JNDI_CLASS

JNDI_URL

JNDI_PREFIX

SESSION_FACTORY_NAME

DIALECT

DEFAULT_SCHEMA

SHOW_SQL

USE_OUTER_JOIN

MAX_FETCH_DEPTH

USE_STREAMS_FOR_BINARY

USE_SCROLLABLE_RESULTSET

USE_GET_GENERATED_KEYS

STATEMENT_FETCH_SIZE

STATEMENT_BATCH_SIZE

BATCH_VERSIONED_DATA

OUTPUT_STYLESHEET

C3P0_MAX_SIZE

C3P0_MIN_SIZE

C3P0_TIMEOUT

C3P0_MAX_STATEMENTS

C3P0_ACQUIRE_INCREMENT

C3P0_IDLE_TEST_PERIOD

C3P0_VALIDATE_CONNECTION

DBCP_MAXACTIVE

DBCP_MAXIDLE

DBCP_MAXWAIT

DBCP_WHENEXHAUSTED

DBCP_VALIDATION_ONBORROW

DBCP_VALIDATION_ONRETURN

DBCP_VALIDATION_QUERY

DBCP_PS_MAXACTIVE

DBCP_PS_MAXIDLE

DBCP_PS_MAXWAIT

DBCP_PS_WHENEXHAUSTED

PROXOOL_PREFIX

PROXOOL_XML

PROXOOL_PROPERTIES

PROXOOL_EXISTING_POOL

PROXOOL_POOL_ALIAS

TRANSACTION_STRATEGY

TRANSACTION_MANAGER_STRATEGY

USER_TRANSACTION

CACHE_PROVIDER

USE_QUERY_CACHE

QUERY_CACHE_FACTORY

CACHE_REGION_PREFIX

USE_MINIMAL_PUTS

USE_REFLECTION_OPTIMIZER

QUERY_SUBSTITUTIONS

QUERY_IMPORTS

HBM2DDL_AUTO

SQL_EXCEPTION_CONVERTER

WRAP_RESULT_SETS

USE_JDBC_BATCH

verifyProperties

jvmSupportsProxies

jvmHasTimestampBug

jvmHasJDK14Timestamp

jvmSupportsLinkedHashCollections

jvmSupportsGetGeneratedKeys

useStreamsForBinary

useReflectionOptimizer

getProperties

isolationLevelToString

net.sf.hibernate.cfg
Class Environment