com.orientechnologies.orient.core.sql.filter.OSQLFilterCondition.getLeft java code examples

@Override
protected boolean evaluateExpression(final OIdentifiable iRecord, final OSQLFilterCondition iCondition, final Object iLeft,
  final Object iRight, final OCommandContext iContext) {
 final OSQLFilterCondition condition;
 final Object target;
 if (iCondition.getLeft() instanceof OSQLFilterCondition) {
  condition = (OSQLFilterCondition) iCondition.getLeft();
  target = iRight;
 } else {
  condition = (OSQLFilterCondition) iCondition.getRight();
  target = iLeft;
 }
 final Set<ORID> evaluatedRecords = new HashSet<ORID>();
 return traverse(target, condition, 0, evaluatedRecords, iContext);
}

private List<List<OIndexSearchResult>> analyzeUnion(OClass iSchemaClass, OSQLFilterCondition condition,
  OCommandContext iContext) {
 List<List<OIndexSearchResult>> result = new ArrayList<List<OIndexSearchResult>>();
 result.addAll(analyzeOrFilterBranch(iSchemaClass, (OSQLFilterCondition) condition.getLeft(), iContext));
 result.addAll(analyzeOrFilterBranch(iSchemaClass, (OSQLFilterCondition) condition.getRight(), iContext));
 return result;
}

 protected Collection<String> fields(OSQLFilterCondition iCondition) {

  Object left = iCondition.getLeft();

  if (left instanceof String) {
   String fName = (String) left;
   return Arrays.asList(fName);
  }
  if (left instanceof Collection) {
   Collection<OSQLFilterItemField> f = (Collection<OSQLFilterItemField>) left;

   List<String> fields = new ArrayList<String>();
   for (OSQLFilterItemField field : f) {
    fields.add(field.toString());
   }
   return fields;
  }
  if (left instanceof OSQLFilterItemField) {

   OSQLFilterItemField fName = (OSQLFilterItemField) left;
   return Arrays.asList(fName.toString());
  }
  return Collections.emptyList();
 }
}

@Override
protected boolean evaluateExpression(final OIdentifiable iRecord, final OSQLFilterCondition iCondition, final Object iLeft,
  Object iRight, OCommandContext iContext) {
 if (iCondition.getLeft() instanceof OSQLFilterItemField) {
  if (OSQLHelper.DEFINED.equals(iCondition.getRight()))
   return evaluateDefined(iRecord, "" + iCondition.getLeft());
  if (iCondition.getRight() instanceof OSQLFilterItemField && "not defined".equalsIgnoreCase("" + iCondition.getRight()))
   return !evaluateDefined(iRecord, "" + iCondition.getLeft());
 }
 if (OSQLHelper.NOT_NULL.equals(iRight))
  return iLeft != null;
 else if (OSQLHelper.NOT_NULL.equals(iLeft))
  return iRight != null;
 else if (OSQLHelper.DEFINED.equals(iLeft))
  return evaluateDefined(iRecord, (String) iRight);
 else if (OSQLHelper.DEFINED.equals(iRight))
  return evaluateDefined(iRecord, (String) iLeft);
 else
  return iLeft == iRight;
}

if (iCondition.getLeft() instanceof OSQLFilterItemField)
 fieldName = iCondition.getLeft().toString();
else
 fieldName = iCondition.getRight().toString();
if (iCondition.getLeft() instanceof OSQLFilterItemField)
 fieldValue = iCondition.getRight().toString();
else
 fieldValue = iCondition.getLeft().toString();

public List<String> getInvolvedFields(final List<String> list) {
 extractInvolvedFields(getLeft(), list);
 extractInvolvedFields(getRight(), list);
 return list;
}

private OIndexSearchResult analyzeIndexMethod(OClass iSchemaClass, OSQLFilterCondition condition,
  List<OIndexSearchResult> iIndexSearchResults, OCommandContext ctx) {
 OIndexSearchResult result = createIndexedProperty(condition, condition.getLeft(), ctx);
 if (result == null) {
  result = createIndexedProperty(condition, condition.getRight(), ctx);
 }
 if (result == null) {
  return null;
 }
 if (checkIndexExistence(iSchemaClass, result)) {
  iIndexSearchResults.add(result);
 }
 return result;
}

private List<List<OIndexSearchResult>> analyzeOrFilterBranch(final OClass iSchemaClass, OSQLFilterCondition condition,
  OCommandContext iContext) {
 if (condition == null) {
  return null;
 }
 OQueryOperator operator = condition.getOperator();
 while (operator == null) {
  if (condition.getRight() == null && condition.getLeft() instanceof OSQLFilterCondition) {
   condition = (OSQLFilterCondition) condition.getLeft();
   operator = condition.getOperator();
  } else {
   return null;
  }
 }
 final OIndexReuseType indexReuseType = operator.getIndexReuseType(condition.getLeft(), condition.getRight());
 if (OIndexReuseType.INDEX_UNION.equals(indexReuseType)) {
  return analyzeUnion(iSchemaClass, condition, iContext);
 }
 List<List<OIndexSearchResult>> result = new ArrayList<List<OIndexSearchResult>>();
 List<OIndexSearchResult> sub = analyzeCondition(condition, iSchemaClass, iContext);
 //    analyzeFilterBranch(iSchemaClass, condition, sub, iContext);
 result.add(sub);
 return result;
}

 if (condition.getRight() == null && condition.getLeft() instanceof OSQLFilterCondition) {
  condition = (OSQLFilterCondition) condition.getLeft();
  operator = condition.getOperator();
 } else {
final OIndexReuseType reuseType = operator.getIndexReuseType(condition.getLeft(), condition.getRight());
switch (reuseType) {
case INDEX_METHOD:
 if (isCovered(indexMatch, operator, condition.getLeft(), condition.getRight())
   || isCovered(indexMatch, operator, condition.getRight(), condition.getLeft())) {
  return null;
 if (condition.getLeft() instanceof OSQLFilterCondition)
  condition.setLeft(optimize((OSQLFilterCondition) condition.getLeft(), indexMatch));
 if (condition.getLeft() == null)
  return (OSQLFilterCondition) condition.getRight();
 if (condition.getRight() == null)
  return (OSQLFilterCondition) condition.getLeft();
 return condition;
 if (isCovered(indexMatch, operator, condition.getLeft(), condition.getRight())
   || isCovered(indexMatch, operator, condition.getRight(), condition.getLeft())) {
  return null;

 protected Collection<String> fields(OSQLFilterCondition iCondition) {

  Object left = iCondition.getLeft();

  if (left instanceof String) {
   String fName = (String) left;
   return Arrays.asList(fName);
  }
  if (left instanceof Collection) {
   Collection<OSQLFilterItemField> f = (Collection<OSQLFilterItemField>) left;

   List<String> fields = new ArrayList<String>();
   for (OSQLFilterItemField field : f) {
    fields.add(field.toString());
   }
   return fields;
  }
  if (left instanceof OSQLFilterItemField) {

   OSQLFilterItemField fName = (OSQLFilterItemField) left;
   if (fName.isFieldChain()) {
    int itemCount = fName.getFieldChain().getItemCount();
    return Arrays.asList(fName.getFieldChain().getItemName(itemCount - 1));
   } else {
    return Arrays.asList(fName.toString());
   }
  }
  return Collections.emptyList();
 }
}

private OIndexSearchResult analyzeFilterBranch(final OClass iSchemaClass, OSQLFilterCondition condition,
  final List<OIndexSearchResult> iIndexSearchResults, OCommandContext iContext) {
 if (condition == null) {
  return null;
 }
 OQueryOperator operator = condition.getOperator();
 while (operator == null) {
  if (condition.getRight() == null && condition.getLeft() instanceof OSQLFilterCondition) {
   condition = (OSQLFilterCondition) condition.getLeft();
   operator = condition.getOperator();
  } else {
   return null;
  }
 }
 final OIndexReuseType indexReuseType = operator.getIndexReuseType(condition.getLeft(), condition.getRight());
 switch (indexReuseType) {
 case INDEX_INTERSECTION:
  return analyzeIntersection(iSchemaClass, condition, iIndexSearchResults, iContext);
 case INDEX_METHOD:
  return analyzeIndexMethod(iSchemaClass, condition, iIndexSearchResults, iContext);
 case INDEX_OPERATOR:
  return analyzeOperator(iSchemaClass, condition, iIndexSearchResults, iContext);
 default:
  return null;
 }
}

private Object[] parseParams(OIdentifiable iRecord, OSQLFilterCondition iCondition) {
 ODocument oDocument = (ODocument) iRecord;
 Collection left = (Collection) iCondition.getLeft();
 Collection right = (Collection) iCondition.getRight();
 Object[] params = new Object[(left.size() * 2) - 2];
 int i = 0;
 for (Object obj : left) {
  if (obj instanceof OSQLFilterItemField) {
   String fName = ((OSQLFilterItemField) obj).getFieldChain().getItemName(0);
   params[i] = oDocument.field(fName);
   i++;
  }
 }
 for (Object obj : right) {
  if (obj instanceof Number) {
   params[i] = ((Double) OType.convert(obj, Double.class)).doubleValue();
   ;
   i++;
  }
 }
 return params;
}

private Object[] parseParams(OIdentifiable iRecord, OSQLFilterCondition iCondition) {
 ODocument oDocument = (ODocument) iRecord;
 Collection left = (Collection) iCondition.getLeft();
 Collection right = (Collection) iCondition.getRight();
 Object[] params = new Object[(left.size() * 2) - 2];
 int i = 0;
 for (Object obj : left) {
  if (obj instanceof OSQLFilterItemField) {
   String fName = ((OSQLFilterItemField) obj).getFieldChain().getItemName(0);
   params[i] = oDocument.field(fName);
   i++;
  }
 }
 for (Object obj : right) {
  if (obj instanceof Number) {
   params[i] = ((Double) OType.convert(obj, Double.class)).doubleValue();
   ;
   i++;
  }
 }
 return params;
}

 protected Set<String> computePrefetchFieldList(final OSQLFilterCondition iCondition, final Set<String> iFields) {
  Object left = iCondition.getLeft();
  Object right = iCondition.getRight();
  if (left instanceof OSQLFilterItemField) {
   ((OSQLFilterItemField) left).setPreLoadedFields(iFields);
   iFields.add(((OSQLFilterItemField) left).getRoot());
  } else if (left instanceof OSQLFilterCondition)
   computePrefetchFieldList((OSQLFilterCondition) left, iFields);

  if (right instanceof OSQLFilterItemField) {
   ((OSQLFilterItemField) right).setPreLoadedFields(iFields);
   iFields.add(((OSQLFilterItemField) right).getRoot());
  } else if (right instanceof OSQLFilterCondition)
   computePrefetchFieldList((OSQLFilterCondition) right, iFields);

  return iFields;
 }
}

public static OIndexSearchResult createIndexedProperty(final OSQLFilterCondition iCondition, final Object iItem) {
 if (iItem == null || !(iItem instanceof OSQLFilterItemField))
  return null;
 if (iCondition.getLeft() instanceof OSQLFilterItemField && iCondition.getRight() instanceof OSQLFilterItemField)
  return null;
 final OSQLFilterItemField item = (OSQLFilterItemField) iItem;
 if (item.hasChainOperators() && !item.isFieldChain())
  return null;
 final Object origValue = iCondition.getLeft() == iItem ? iCondition.getRight() : iCondition.getLeft();
 if (iCondition.getOperator() instanceof OQueryOperatorBetween || iCondition.getOperator() instanceof OQueryOperatorIn) {
  return new OIndexSearchResult(iCondition.getOperator(), item.getFieldChain(), origValue);
 }
 final Object value = OSQLHelper.getValue(origValue);
 if (value == null)
  return null;
 return new OIndexSearchResult(iCondition.getOperator(), item.getFieldChain(), value);
}

public static OIndexSearchResult createIndexedProperty(final OSQLFilterCondition iCondition, final Object iItem) {
 if (iItem == null || !(iItem instanceof OSQLFilterItemField))
  return null;
 if (iCondition.getLeft() instanceof OSQLFilterItemField && iCondition.getRight() instanceof OSQLFilterItemField)
  return null;
 final OSQLFilterItemField item = (OSQLFilterItemField) iItem;
 if (item.hasChainOperators() && !item.isFieldChain())
  return null;
 final Object origValue = iCondition.getLeft() == iItem ? iCondition.getRight() : iCondition.getLeft();
 if (iCondition.getOperator() instanceof OQueryOperatorBetween || iCondition.getOperator() instanceof OQueryOperatorIn) {
  return new OIndexSearchResult(iCondition.getOperator(), item.getFieldChain(), origValue);
 }
 final Object value = OSQLHelper.getValue(origValue);
 if (value == null)
  return null;
 return new OIndexSearchResult(iCondition.getOperator(), item.getFieldChain(), value);
}

private OIndexSearchResult analyzeIntersection(OClass iSchemaClass, OSQLFilterCondition condition,
  List<OIndexSearchResult> iIndexSearchResults, OCommandContext iContext) {
 final OIndexSearchResult leftResult = analyzeFilterBranch(iSchemaClass, (OSQLFilterCondition) condition.getLeft(),
   iIndexSearchResults, iContext);
 final OIndexSearchResult rightResult = analyzeFilterBranch(iSchemaClass, (OSQLFilterCondition) condition.getRight(),
   iIndexSearchResults, iContext);
 if (leftResult != null && rightResult != null) {
  if (leftResult.canBeMerged(rightResult)) {
   final OIndexSearchResult mergeResult = leftResult.merge(rightResult);
   if (iSchemaClass.areIndexed(mergeResult.fields())) {
    iIndexSearchResults.add(mergeResult);
   }
   return leftResult.merge(rightResult);
  }
 }
 return null;
}

private void mergeRangeConditionsToBetweenOperators(OSQLFilterCondition condition) {
 if (condition == null) {
  return;
 }
 OSQLFilterCondition newCondition;
 if (condition.getLeft() instanceof OSQLFilterCondition) {
  OSQLFilterCondition leftCondition = (OSQLFilterCondition) condition.getLeft();
  newCondition = convertToBetweenClause(leftCondition);
  if (newCondition != null) {
   condition.setLeft(newCondition);
   metricRecorder.recordRangeQueryConvertedInBetween();
  } else {
   mergeRangeConditionsToBetweenOperators(leftCondition);
  }
 }
 if (condition.getRight() instanceof OSQLFilterCondition) {
  OSQLFilterCondition rightCondition = (OSQLFilterCondition) condition.getRight();
  newCondition = convertToBetweenClause(rightCondition);
  if (newCondition != null) {
   condition.setRight(newCondition);
   metricRecorder.recordRangeQueryConvertedInBetween();
  } else {
   mergeRangeConditionsToBetweenOperators(rightCondition);
  }
 }
}

 return;
Object left = iCondition.getLeft();
  if (iCondition == iParentCondition.getLeft())

protected OLuceneFullTextIndex involvedIndex(OIdentifiable iRecord, ODocument iCurrentResult, OSQLFilterCondition iCondition,
  Object iLeft, Object iRight) {
 ODocument doc = iRecord.getRecord();
 OClass cls = getDatabase().getMetadata().getSchema().getClass(doc.getClassName());
 if (isChained(iCondition.getLeft())) {
  OSQLFilterItemField chained = (OSQLFilterItemField) iCondition.getLeft();
  OSQLFilterItemField.FieldChain fieldChain = chained.getFieldChain();
  OClass oClass = cls;
  for (int i = 0; i < fieldChain.getItemCount() - 1; i++) {
   oClass = oClass.getProperty(fieldChain.getItemName(i)).getLinkedClass();
  }
  if (oClass != null) {
   cls = oClass;
  }
 }
 Set<OIndex<?>> classInvolvedIndexes = cls.getInvolvedIndexes(fields(iCondition));
 OLuceneFullTextIndex idx = null;
 for (OIndex<?> classInvolvedIndex : classInvolvedIndexes) {
  if (classInvolvedIndex.getInternal() instanceof OLuceneFullTextIndex) {
   idx = (OLuceneFullTextIndex) classInvolvedIndex.getInternal();
   break;
  }
 }
 return idx;
}

How to use getLeftmethodin com.orientechnologies.orient.core.sql.filter.OSQLFilterCondition

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How to use
getLeft
method
in
com.orientechnologies.orient.core.sql.filter.OSQLFilterCondition