JDBCFieldBridge (JBoss Server API) - JBoss 4.0.1 sp1 server API Documentation 英文版文档

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org.jboss.ejb.plugins.cmp.jdbc.bridge
Interface JDBCFieldBridge

All Superinterfaces:: FieldBridge

All Known Subinterfaces:: JDBCCMPFieldBridge

All Known Implementing Classes:: JDBCAbstractCMPFieldBridge, JDBCAbstractCMRFieldBridge, JDBCCMPFieldBridge2

public interface JDBCFieldBridge
extends FieldBridge

Author:: Alex Loubyansky and others

Method Summary

Object getInstanceValue(EntityEnterpriseContext ctx)
          Gets the internal value of this field without user level checks.

JDBCType getJDBCType()
          Gets the JDBC type of this field.

JDBCEntityPersistenceStore getManager()


Object getPrimaryKeyValue(Object arg)


void initInstance(EntityEnterpriseContext ctx)
          Set CMPFieldValue to Java default value (i.e., 0 or null).

boolean isCMPField()


boolean isDirty(EntityEnterpriseContext ctx)
          Has the value of this field changes since the last time clean was called.

boolean isLoaded(EntityEnterpriseContext ctx)
          Has the data been loaded?

boolean isPrimaryKeyMember()
          Is this field a member of the primary key.

boolean isReadOnly()
          Is this field read only.

boolean isReadTimedOut(EntityEnterpriseContext ctx)
          Has current data read timed out?

int loadArgumentResults(ResultSet rs, int parameterIndex, Object[] argumentRef)
          Loads the value of this cmp field from result set into argument referance.

int loadInstanceResults(ResultSet rs, int parameterIndex, EntityEnterpriseContext ctx)
          Loads the data from result set into the instance associated with the specified context.

void resetPersistenceContext(EntityEnterpriseContext ctx)
          Resets any persistence data maintained in the context.

void setClean(EntityEnterpriseContext ctx)
          Mark this field as clean.

int setInstanceParameters(PreparedStatement ps, int parameterIndex, EntityEnterpriseContext ctx)
          Sets the prepared statement parameters with the data from the instance associated with the context.

void setInstanceValue(EntityEnterpriseContext ctx, Object value)
          Sets the internal value of this field without user level checks.

Methods inherited from interface org.jboss.ejb.plugins.cmp.bridge.FieldBridge

getFieldName, getValue, setValue

Method Detail

getJDBCType

public JDBCType getJDBCType()

Gets the JDBC type of this field.

isPrimaryKeyMember

public boolean isPrimaryKeyMember()

Is this field a member of the primary key.

Returns:: true if this field is a member of the primary key

isReadOnly

public boolean isReadOnly()

Is this field read only.

Returns:: true if this field is read only

isReadTimedOut

public boolean isReadTimedOut(EntityEnterpriseContext ctx)

Has current data read timed out?

isLoaded

public boolean isLoaded(EntityEnterpriseContext ctx)

Has the data been loaded?

initInstance

public void initInstance(EntityEnterpriseContext ctx)

Set CMPFieldValue to Java default value (i.e., 0 or null).

resetPersistenceContext

public void resetPersistenceContext(EntityEnterpriseContext ctx)

Resets any persistence data maintained in the context.

setInstanceParameters

public int setInstanceParameters(PreparedStatement ps,
                                 int parameterIndex,
                                 EntityEnterpriseContext ctx)

Sets the prepared statement parameters with the data from the instance associated with the context.

getInstanceValue

public Object getInstanceValue(EntityEnterpriseContext ctx)

Gets the internal value of this field without user level checks.

Parameters:: ctx - the context for which this field's value should be fetched
Returns:: the value of this field

setInstanceValue

public void setInstanceValue(EntityEnterpriseContext ctx,
                             Object value)

Sets the internal value of this field without user level checks.

Parameters:: ctx - the context for which this field's value should be set; value - the new value of this field

loadInstanceResults

public int loadInstanceResults(ResultSet rs,
                               int parameterIndex,
                               EntityEnterpriseContext ctx)

Loads the data from result set into the instance associated with the specified context.

loadArgumentResults

public int loadArgumentResults(ResultSet rs,
                               int parameterIndex,
                               Object[] argumentRef)

Loads the value of this cmp field from result set into argument referance.

isDirty

public boolean isDirty(EntityEnterpriseContext ctx)

Has the value of this field changes since the last time clean was called.

setClean

public void setClean(EntityEnterpriseContext ctx)

Mark this field as clean.

isCMPField

public boolean isCMPField()

getManager

public JDBCEntityPersistenceStore getManager()

getPrimaryKeyValue

public Object getPrimaryKeyValue(Object arg)