Java Doc for GenericConglomerate.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » store » access » conglomerate » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.store.access.conglomerate 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.derby.iapi.types.DataType
      org.apache.derby.impl.store.access.conglomerate.GenericConglomerate

All known Subclasses:   org.apache.derby.impl.store.access.btree.BTree,  org.apache.derby.impl.store.access.heap.Heap,
GenericConglomerate
abstract public class GenericConglomerate extends DataType implements Conglomerate(Code)
A class that implements the methods shared across all implementations of the Conglomerate interface.




Method Summary
public  intcompare(DataValueDescriptor other)
     Compare this Orderable with a given Orderable for the purpose of index positioning.
public  DataValueDescriptorgetClone()
     Shallow copy.
public  intgetLength()
     Gets the length of the data value.
public  DataValueDescriptorgetNewNull()
     Get a new null value of the same type as this data value.
public  ObjectgetObject()
     Gets the value in the data value descriptor as a Java Object. The type of the Object will be the Java object type corresponding to the data value's SQL type.
public  StringgetString()
     Gets the value in the data value descriptor as a String.
public  StringgetTypeName()
    
protected  voidsetFrom(DataValueDescriptor theValue)
     Set the value of this DataValueDescriptor from another.
public  voidsetValueFromResultSet(ResultSet resultSet, int colNumber, boolean isNullable)
     Set the value based on the value for the specified DataValueDescriptor from the specified ResultSet.



Method Detail
compare
public int compare(DataValueDescriptor other) throws StandardException(Code)
Compare this Orderable with a given Orderable for the purpose of index positioning. This method treats nulls as ordered values - that is, it treats SQL null as equal to null and less than all other values.
Parameters:
  other - The Orderable to compare this one to. <0 - this Orderable is less than other.0 - this Orderable equals other.>0 - this Orderable is greater than other.The code should not explicitly look for -1, or 1.
exception:
  StandardException - Thrown on error
See Also:   DataValueDescriptor.compare



getClone
public DataValueDescriptor getClone()(Code)
Shallow copy.

Clone the DataValueDescriptor and copy its contents. We clone the data value wrapper (e.g. SQLDecimal) and reuse its contents (the underlying BigDecimal). The resultant DataValueDescriptor will point to the same value as the original DataValueDescriptor (unless the value is a primitive type, e.g. SQLInteger/integer). A clone of the DataValueDescriptor reusing its contents.
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.getClone




getLength
public int getLength() throws StandardException(Code)
Gets the length of the data value. The meaning of this is implementation-dependent. For string types, it is the number of characters in the string. For numeric types, it is the number of bytes used to store the number. This is the actual length of this value, not the length of the type it was defined as. For example, a VARCHAR value may be shorter than the declared VARCHAR (maximum) length. The length of the data value
exception:
  StandardException - On error
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.getLength



getNewNull
public DataValueDescriptor getNewNull()(Code)
Get a new null value of the same type as this data value.
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.getNewNull



getObject
public Object getObject() throws StandardException(Code)
Gets the value in the data value descriptor as a Java Object. The type of the Object will be the Java object type corresponding to the data value's SQL type. JDBC defines a mapping between Java object types and SQL types - we will allow that to be extended through user type definitions. Throws an exception if the data value is not an object (yeah, right). The data value as an Object.
exception:
  StandardException - Thrown on error
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.getObject



getString
public String getString() throws StandardException(Code)
Gets the value in the data value descriptor as a String. Throws an exception if the data value is not a string. The data value as a String.
exception:
  StandardException - Thrown on error
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.getString



getTypeName
public String getTypeName()(Code)
Get the SQL name of the datatype The SQL name of the datatype
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.getTypeName



setFrom
protected void setFrom(DataValueDescriptor theValue) throws StandardException(Code)
Set the value of this DataValueDescriptor from another.
Parameters:
  theValue - The Date value to set this DataValueDescriptor to
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.setValue



setValueFromResultSet
public void setValueFromResultSet(ResultSet resultSet, int colNumber, boolean isNullable) throws StandardException, SQLException(Code)
Set the value based on the value for the specified DataValueDescriptor from the specified ResultSet.
Parameters:
  resultSet - The specified ResultSet.
Parameters:
  colNumber - The 1-based column # into the resultSet.
Parameters:
  isNullable - Whether or not the column is nullable(No need to call wasNull() if not)
exception:
  StandardException - Thrown on error
exception:
  SQLException - Error accessing the result set
See Also:   org.apache.derby.iapi.types.DataValueDescriptor.setValueFromResultSet



Methods inherited from org.apache.derby.iapi.types.DataType
public void checkHostVariable(int declaredLength) throws StandardException(Code)(Java Doc)
public Object cloneObject()(Code)(Java Doc)
public DataValueDescriptor coalesce(DataValueDescriptor[] argumentsList, DataValueDescriptor returnValue) throws StandardException(Code)(Java Doc)
public boolean compare(int op, DataValueDescriptor other, boolean orderedNulls, boolean unknownRV) throws StandardException(Code)(Java Doc)
final protected StandardException dataTypeConversion(String targetType)(Code)(Java Doc)
public BooleanDataValue equals(DataValueDescriptor left, DataValueDescriptor right) throws StandardException(Code)(Java Doc)
public boolean equals(Object other)(Code)(Java Doc)
protected static int flip(int operator)(Code)(Java Doc)
public boolean getBoolean() throws StandardException(Code)(Java Doc)
public byte getByte() throws StandardException(Code)(Java Doc)
public byte[] getBytes() throws StandardException(Code)(Java Doc)
public Date getDate(Calendar cal) throws StandardException(Code)(Java Doc)
public double getDouble() throws StandardException(Code)(Java Doc)
public float getFloat() throws StandardException(Code)(Java Doc)
public int getInt() throws StandardException(Code)(Java Doc)
public long getLong() throws StandardException(Code)(Java Doc)
protected String getNationalString(LocaleFinder localeFinder) throws StandardException(Code)(Java Doc)
public Object getObject() throws StandardException(Code)(Java Doc)
public short getShort() throws StandardException(Code)(Java Doc)
public InputStream getStream() throws StandardException(Code)(Java Doc)
public Time getTime(Calendar cal) throws StandardException(Code)(Java Doc)
public Timestamp getTimestamp(Calendar cal) throws StandardException(Code)(Java Doc)
public String getTraceString() throws StandardException(Code)(Java Doc)
public BooleanDataValue greaterOrEquals(DataValueDescriptor left, DataValueDescriptor right) throws StandardException(Code)(Java Doc)
public BooleanDataValue greaterThan(DataValueDescriptor left, DataValueDescriptor right) throws StandardException(Code)(Java Doc)
public BooleanDataValue in(DataValueDescriptor left, DataValueDescriptor[] inList, boolean orderedList) throws StandardException(Code)(Java Doc)
final protected StandardException invalidFormat()(Code)(Java Doc)
final public BooleanDataValue isNotNull()(Code)(Java Doc)
final public BooleanDataValue isNullOp()(Code)(Java Doc)
public BooleanDataValue lessOrEquals(DataValueDescriptor left, DataValueDescriptor right) throws StandardException(Code)(Java Doc)
public BooleanDataValue lessThan(DataValueDescriptor left, DataValueDescriptor right) throws StandardException(Code)(Java Doc)
public void normalize(DataTypeDescriptor desiredType, DataValueDescriptor source) throws StandardException(Code)(Java Doc)
public BooleanDataValue notEquals(DataValueDescriptor left, DataValueDescriptor right) throws StandardException(Code)(Java Doc)
final protected StandardException outOfRange()(Code)(Java Doc)
public void setBigDecimal(Number bigDecimal) throws StandardException(Code)(Java Doc)
protected void setFrom(DataValueDescriptor dvd) throws StandardException(Code)(Java Doc)
public void setInto(PreparedStatement ps, int position) throws SQLException, StandardException(Code)(Java Doc)
public void setInto(ResultSet rs, int position) throws SQLException, StandardException(Code)(Java Doc)
public void setObjectForCast(Object theValue, boolean instanceOfResultType, String resultTypeClassName) throws StandardException(Code)(Java Doc)
public void setToNull()(Code)(Java Doc)
public void setValue(Time theValue) throws StandardException(Code)(Java Doc)
public void setValue(Time theValue, Calendar cal) throws StandardException(Code)(Java Doc)
public void setValue(Timestamp theValue) throws StandardException(Code)(Java Doc)
public void setValue(Timestamp theValue, Calendar cal) throws StandardException(Code)(Java Doc)
public void setValue(Date theValue) throws StandardException(Code)(Java Doc)
public void setValue(Date theValue, Calendar cal) throws StandardException(Code)(Java Doc)
public void setValue(String theValue) throws StandardException(Code)(Java Doc)
public void setValue(int theValue) throws StandardException(Code)(Java Doc)
public void setValue(double theValue) throws StandardException(Code)(Java Doc)
public void setValue(float theValue) throws StandardException(Code)(Java Doc)
public void setValue(short theValue) throws StandardException(Code)(Java Doc)
public void setValue(long theValue) throws StandardException(Code)(Java Doc)
public void setValue(byte theValue) throws StandardException(Code)(Java Doc)
public void setValue(boolean theValue) throws StandardException(Code)(Java Doc)
public void setValue(byte[] theValue) throws StandardException(Code)(Java Doc)
final public void setValue(DataValueDescriptor dvd) throws StandardException(Code)(Java Doc)
public void setValue(InputStream theStream, int valueLength) throws StandardException(Code)(Java Doc)
public void throwLangSetMismatch(Object value) throws StandardException(Code)(Java Doc)
public int typePrecedence()(Code)(Java Doc)
public int typeToBigDecimal() throws StandardException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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