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package uk.ac.bristol.star.cdf.record;
import java.io.IOException;
/**
* Abstract superclass for CDF Attribute Entry Descriptor Records.
* Two concrete subclasses exist for AzEDRs and AgrEDRs.
*
* @author Mark Taylor
* @since 19 Jun 2013
*/
public abstract class AttributeEntryDescriptorRecord extends Record {
@CdfField @OffsetField public final long aedrNext;
@CdfField public final int attrNum;
@CdfField public final int dataType;
@CdfField public final int num;
@CdfField public final int numElems;
@CdfField public final int rfuA;
@CdfField public final int rfuB;
@CdfField public final int rfuC;
@CdfField public final int rfuD;
@CdfField public final int rfuE;
private final long valueOffset_;
/**
* Constructor.
*
* @param plan basic record info
* @param abbrev abbreviated name for record type
* @param recordType record type code
*/
private AttributeEntryDescriptorRecord( RecordPlan plan, String abbrev,
int recordType )
throws IOException {
super( plan, abbrev, recordType );
Buf buf = plan.getBuf();
Pointer ptr = plan.createContentPointer();
this.aedrNext = buf.readOffset( ptr );
this.attrNum = buf.readInt( ptr );
this.dataType = buf.readInt( ptr );
this.num = buf.readInt( ptr );
this.numElems = buf.readInt( ptr );
this.rfuA = buf.readInt( ptr );
this.rfuB = buf.readInt( ptr );
this.rfuC = buf.readInt( ptr );
this.rfuD = buf.readInt( ptr );
this.rfuE = buf.readInt( ptr );
valueOffset_ = ptr.get();
}
/**
* Returns the file offset at which this record's Value field starts.
*
* @return file offset of Value field
*/
public long getValueOffset() {
return valueOffset_;
}
/**
* Field data for CDF record of type Attribute g/rEntry Descriptor Record.
*/
public static class GrVariant extends AttributeEntryDescriptorRecord {
/**
* Constructor.
*
* @param plan basic record information
*/
public GrVariant( RecordPlan plan ) throws IOException {
super( plan, "AgrEDR", 5 );
}
}
/**
* Field data for CDF record of type Attribute zEntry Descriptor Record.
*/
public static class ZVariant extends AttributeEntryDescriptorRecord {
/**
* Constructor.
*
* @param plan basic record information
*/
public ZVariant( RecordPlan plan ) throws IOException {
super( plan, "AzEDR", 9 );
}
}
}
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