Example usage for org.hibernate.sql JoinType FULL_JOIN

Introduction

In this page you can find the example usage for org.hibernate.sql JoinType FULL_JOIN.

Prototype

JoinType FULL_JOIN

To view the source code for org.hibernate.sql JoinType FULL_JOIN.

Click Source Link

Usage

From source file:com.amalto.core.storage.hibernate.StandardQueryHandler.java

License:Open Source License

@Override
public StorageResults visit(Join join) {
    FieldMetadata rightField = join.getRightField().getFieldMetadata();
    FieldMetadata leftField = join.getLeftField().getFieldMetadata();
    // Choose the right join alias
    String rightAlias = rightField.getContainingType().getName();
    if (rightField.getEntityTypeName().equals(leftField.getEntityTypeName())) {
        // TMDM-7170: use a new alias for recursive relations
        rightAlias = createNewAlias();/*from   ww w . j a v  a 2 s .c  o m*/
    }
    // Choose the right join type
    JoinType joinType;
    switch (join.getJoinType()) {
    case INNER:
        joinType = JoinType.INNER_JOIN;
        break;
    case LEFT_OUTER:
        joinType = JoinType.LEFT_OUTER_JOIN;
        break;
    case FULL:
        joinType = JoinType.FULL_JOIN;
        break;
    default:
        throw new NotImplementedException("No support for join type " + join.getJoinType()); //$NON-NLS-1$
    }
    // Select a path from mainType to the selected field (properties are '.' separated).
    List<FieldMetadata> path = StorageMetadataUtils.path(mainType, leftField);
    // Empty path means no path then this is an error (all joined entities should be reachable from main type).
    if (path.isEmpty()) {
        String destinationFieldName;
        try {
            destinationFieldName = rightField.getName();
        } catch (Exception e) {
            // Ignored
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("Exception occurred during exception creation", e); //$NON-NLS-1$
            }
            destinationFieldName = String.valueOf(rightField);
        }
        throw new IllegalArgumentException("Join to '" + destinationFieldName + "' (in type '" //$NON-NLS-1$ //$NON-NLS-2$
                + rightField.getContainingType().getName() + "') is invalid since there is no path from '" //$NON-NLS-1$
                + mainType.getName() + "' to this field."); //$NON-NLS-1$
    }
    // Generate all necessary joins to go from main type to join right table.
    generateJoinPath(Collections.singleton(rightAlias), joinType, path);
    return null;
}

---