Come Trovare un Certificatore Energetico - Geometri

Scopri come trovare un certificatore energetico competente e come i geometri possono aiutarti nel processo. Questo articolo offre consigli pratici e informazioni utili per garantire una ristrutturazione edilizia efficiente e conforme alle normative vigenti, ottimizzando così il valore della tua proprietà.

package com.bazaarvoice.emodb.sor.db.astyanax; import com.bazaarvoice.emodb.sor.db.Key; import com.google.common.collect.AbstractIterator; import com.google.common.collect.Range; import com.netflix.astyanax.ColumnListMutation; import com.netflix.astyanax.Keyspace; import com.netflix.astyanax.MutationBatch; import com.netflix.astyanax.model.ColumnFamily; import com.netflix.astyanax.model.ColumnList; import com.netflix.astyanax.model.Rows; import com.netflix.astyanax.query.RowSliceQuery; import com.netflix.astyanax.serializers.LongSerializer; import com.netflix.astyanax.serializers.StringSerializer; import java.util.Iterator; import static com.google.common.base.Preconditions.checkArgument; import static com.google.common.base.Preconditions.checkNotNull; /** * Iterator for iterating over {@link ColumnList}s in an Astyanax {@link Keyspace}. The iterator requires two * Astyanax column families. The first, {@link #_indexCF}, is used to determine the range of values to iterate over. * For each value in the range the iterator queries the second column family, {@link #_columnFamily}, to get the * corresponding {@link ColumnList}. */ public class ColumnListIterator extends AbstractIterator { private final Range _range; private final ColumnFamily _indexCF; private final ColumnFamily _columnFamily; private final Keyspace _keyspace; private Iterator _keys; private Long _currentKey; public ColumnListIterator(Range range, ColumnFamily indexCF, ColumnFamily columnFamily, Keyspace keyspace) { _range = checkNotNull(range, "range"); _indexCF = checkNotNull(indexCF, "indexCF"); _columnFamily = checkNotNull(columnFamily, "columnFamily"); _keyspace = checkNotNull(keyspace, "keyspace"); } @Override protected ColumnList computeNext() { while (true) { if (_keys == null) { _keys = getKeys().iterator(); } if (_keys.hasNext()) { _currentKey = _keys.next(); ColumnList columns = getColumns(_currentKey); if (!columns.isEmpty()) { return columns; } } else { return endOfData(); } } } private Iterable getKeys() { RowSliceQuery query = _keyspace.prepareQuery(_indexCF).getKeySlice(_range.lowerEndpoint().getBytes(), _range.upperEndpoint().getBytes()); Rows rows = query.execute().getResult(); return rows.getKeys(); } private ColumnList getColumns(long key) { return _keyspace.prepareQuery(_columnFamily).getKey(key).execute().getResult(); } /** * Deletes the current row from the index and column families. */ public void delete() { checkArgument(_currentKey != null, "delete() should only be called after a call to computeNext() returns non-null"); MutationBatch mutation = _keyspace.prepareMutationBatch(); ColumnListMutation indexMutation = mutation.withRow(_indexCF, _currentKey); indexMutation.delete(); ColumnListMutation columnMutation = mutation.withRow(_columnFamily, _currentKey); columnMutation.delete(); mutation.execute(); } public void update(ColumnList columns) { checkArgument(_currentKey != null, "update() should only be called after a call to computeNext() returns non-null"); MutationBatch mutation = _keyspace.prepareMutationBatch(); ColumnListMutation columnMutation = mutation.withRow(_columnFamily, _currentKey); for (int i=0; i < columns.size(); i++) { columnMutation.putColumn(columns.getColumnByIndex(i).getName(), columns.getColumnByIndex(i).getByteBufferValue(), StringSerializer.get(), LongSerializer.get()); } mutation.execute(); } }