core/src/main/java/com/orientechnologies/orient/core/sql/executor/OMatchExecutionPlanner.java
private void assignDefaultAliases(List<OMatchExpression> matchExpressions) {
    int counter = 0;
    for (OMatchExpression expression : matchExpressions) {
      if (expression.getOrigin().getAlias() == null) {
        expression.getOrigin().setAlias(DEFAULT_ALIAS_PREFIX + (counter++));
      }

      for (OMatchPathItem item : expression.getItems()) {
        if (item.getFilter() == null) {
          item.setFilter(new OMatchFilter(-1));
        }
        if (item.getFilter().getAlias() == null) {
          item.getFilter().setAlias(DEFAULT_ALIAS_PREFIX + (counter++));
        }
      }
    }
  }
private void assignDefaultAliases(List<OMatchExpression> matchExpressions) {
    int counter = 0;
    for (OMatchExpression expression : matchExpressions) {
      if (expression.getOrigin().getAlias() == null) {
        expression.getOrigin().setAlias(DEFAULT_ALIAS_PREFIX + (counter++));
      }

      for (OMatchPathItem item : expression.getItems()) {
        if (item.getFilter() == null) {
          item.setFilter(new OMatchFilter(-1));
        }
        if (item.getFilter().getAlias() == null) {
          item.getFilter().setAlias(DEFAULT_ALIAS_PREFIX + (counter++));
        }
      }
    }
  }
private void assignDefaultAliases ( List < OMatchExpression > matchExpressions ) { int counter = 0 ; for ( OMatchExpression expression : matchExpressions ) { if ( expression . getOrigin ( ) . getAlias ( ) == null ) { expression . getOrigin ( ) . setAlias ( DEFAULT_ALIAS_PREFIX + ( counter ++ ) ) ; } for ( OMatchPathItem item : expression . getItems ( ) ) { if ( item . getFilter ( ) == null ) { item . setFilter ( new OMatchFilter ( - 1 ) ) ; } if ( item . getFilter ( ) . getAlias ( ) == null ) { item . getFilter ( ) . setAlias ( DEFAULT_ALIAS_PREFIX + ( counter ++ ) ) ; } } } }
assigns default aliases to pattern nodes that do not have an explicit alias

@param matchExpressions
assigns default aliases to pattern nodes that do not have an explicit alias