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package com.salesforce.phoenix.filter;
import org.apache.hadoop.hbase.util.Bytes;
import com.salesforce.hbase.index.util.ImmutableBytesPtr;
import com.salesforce.phoenix.expression.Expression;
/**
*
* Filter that evaluates WHERE clause expression, used in the case where there
* are references to multiple column qualifiers over a single column family.
*
* @author jtaylor
* @since 0.1
*/
public class MultiCQKeyValueComparisonFilter extends MultiKeyValueComparisonFilter {
private ImmutableBytesPtr ptr = new ImmutableBytesPtr();
private byte[] cf;
public MultiCQKeyValueComparisonFilter() {
}
public MultiCQKeyValueComparisonFilter(Expression expression) {
super(expression);
}
@Override
protected Object setColumnKey(byte[] cf, int cfOffset, int cfLength, byte[] cq, int cqOffset,
int cqLength) {
ptr.set(cq, cqOffset, cqLength);
return ptr;
}
@Override
protected Object newColumnKey(byte[] cf, int cfOffset, int cfLength, byte[] cq, int cqOffset,
int cqLength) {
if (cfOffset == 0 && cf.length == cfLength) {
this.cf = cf;
} else {
this.cf = new byte[cfLength];
System.arraycopy(cf, cfOffset, this.cf, 0, cfLength);
}
return new ImmutableBytesPtr(cq, cqOffset, cqLength);
}
@SuppressWarnings("all") // suppressing missing @Override since this doesn't exist for HBase 0.94.4
public boolean isFamilyEssential(byte[] name) {
return Bytes.compareTo(cf, name) == 0;
}
}