Examples with SchemaDescriptor org.apache.derby.iapi.sql.dictionary.SchemaDescriptor used on opensource projects

Example 71 with SchemaDescriptor

use of org.apache.derby.iapi.sql.dictionary.SchemaDescriptor in project derby by apache.

the class TablePrivilegeInfo method executeGrantRevoke.

/**
 *	This is the guts of the Execution-time logic for GRANT/REVOKE of a table privilege
 *
 * @param activation
 * @param grant true if grant, false if revoke
 * @param grantees a list of authorization ids (strings)
 *
 * @exception StandardException		Thrown on failure
 */
public void executeGrantRevoke(Activation activation, boolean grant, List grantees) throws StandardException {
    LanguageConnectionContext lcc = activation.getLanguageConnectionContext();
    DataDictionary dd = lcc.getDataDictionary();
    String currentUser = lcc.getCurrentUserId(activation);
    TransactionController tc = lcc.getTransactionExecute();
    SchemaDescriptor sd = td.getSchemaDescriptor();
    // Check that the current user has permission to grant the privileges.
    checkOwnership(currentUser, td, sd, dd, lcc, grant);
    DataDescriptorGenerator ddg = dd.getDataDescriptorGenerator();
    TablePermsDescriptor tablePermsDesc = ddg.newTablePermsDescriptor(td, getPermString(SELECT_ACTION, false), getPermString(DELETE_ACTION, false), getPermString(INSERT_ACTION, false), getPermString(UPDATE_ACTION, false), getPermString(REFERENCES_ACTION, false), getPermString(TRIGGER_ACTION, false), currentUser);
    ColPermsDescriptor[] colPermsDescs = new ColPermsDescriptor[columnBitSets.length];
    for (int i = 0; i < columnBitSets.length; i++) {
        if (columnBitSets[i] != null || // should be removed.
        (!grant) && hasColumnPermissions(i) && actionAllowed[i]) {
            colPermsDescs[i] = ddg.newColPermsDescriptor(td, getActionString(i, false), columnBitSets[i], currentUser);
        }
    }
    dd.startWriting(lcc);
    // Add or remove the privileges to/from the SYS.SYSTABLEPERMS and SYS.SYSCOLPERMS tables
    for (Iterator itr = grantees.iterator(); itr.hasNext(); ) {
        // Keep track to see if any privileges are revoked by a revoke
        // statement. If a privilege is not revoked, we need to raise a
        // warning. For table privileges, we do not check if privilege for
        // a specific action has been revoked or not. Also, we do not check
        // privileges for specific columns. If at least one privilege has
        // been revoked, we do not raise a warning. This has to be refined
        // further to check for specific actions/columns and raise warning
        // if any privilege has not been revoked.
        boolean privileges_revoked = false;
        String grantee = (String) itr.next();
        if (tablePermsDesc != null) {
            if (dd.addRemovePermissionsDescriptor(grant, tablePermsDesc, grantee, tc)) {
                privileges_revoked = true;
                dd.getDependencyManager().invalidateFor(tablePermsDesc, DependencyManager.REVOKE_PRIVILEGE, lcc);
                // When revoking a privilege from a Table we need to
                // invalidate all GPSs refering to it. But GPSs aren't
                // Dependents of TablePermsDescr, but of the
                // TableDescriptor itself, so we must send
                // INTERNAL_RECOMPILE_REQUEST to the TableDescriptor's
                // Dependents.
                dd.getDependencyManager().invalidateFor(td, DependencyManager.INTERNAL_RECOMPILE_REQUEST, lcc);
            }
        }
        for (int i = 0; i < columnBitSets.length; i++) {
            if (colPermsDescs[i] != null) {
                if (dd.addRemovePermissionsDescriptor(grant, colPermsDescs[i], grantee, tc)) {
                    privileges_revoked = true;
                    dd.getDependencyManager().invalidateFor(colPermsDescs[i], DependencyManager.REVOKE_PRIVILEGE, lcc);
                    // When revoking a privilege from a Table we need to
                    // invalidate all GPSs refering to it. But GPSs aren't
                    // Dependents of colPermsDescs[i], but of the
                    // TableDescriptor itself, so we must send
                    // INTERNAL_RECOMPILE_REQUEST to the TableDescriptor's
                    // Dependents.
                    dd.getDependencyManager().invalidateFor(td, DependencyManager.INTERNAL_RECOMPILE_REQUEST, lcc);
                }
            }
        }
        addWarningIfPrivilegeNotRevoked(activation, grant, privileges_revoked, grantee);
    }
}

Example 72 with SchemaDescriptor

use of org.apache.derby.iapi.sql.dictionary.SchemaDescriptor in project derby by apache.

the class SetSchemaConstantAction method executeConstantAction.

// INTERFACE METHODS
/**
 *	This is the guts of the Execution-time logic for SET SCHEMA.
 *
 *	@see ConstantAction#executeConstantAction
 *
 * @exception StandardException		Thrown on failure
 */
public void executeConstantAction(Activation activation) throws StandardException {
    LanguageConnectionContext lcc;
    DataDictionary dd;
    // find the language context.
    lcc = activation.getLanguageConnectionContext();
    dd = lcc.getDataDictionary();
    String thisSchemaName = schemaName;
    if (type == StatementType.SET_SCHEMA_DYNAMIC) {
        ParameterValueSet pvs = activation.getParameterValueSet();
        DataValueDescriptor dvs = pvs.getParameter(0);
        thisSchemaName = dvs.getString();
        // null parameter is not allowed
        if (thisSchemaName == null || thisSchemaName.length() > Limits.MAX_IDENTIFIER_LENGTH)
            throw StandardException.newException(SQLState.LANG_DB2_REPLACEMENT_ERROR, "CURRENT SCHEMA");
    } else if (type == StatementType.SET_SCHEMA_USER) {
        thisSchemaName = lcc.getCurrentUserId(activation);
    }
    SchemaDescriptor sd = dd.getSchemaDescriptor(thisSchemaName, lcc.getTransactionExecute(), true);
    lcc.setDefaultSchema(activation, sd);
}

Example 73 with SchemaDescriptor

use of org.apache.derby.iapi.sql.dictionary.SchemaDescriptor in project derby by apache.

the class StatementSchemaPermission method check.

/**
 * @see StatementPermission#check
 */
public void check(LanguageConnectionContext lcc, boolean forGrant, Activation activation) throws StandardException {
    DataDictionary dd = lcc.getDataDictionary();
    TransactionController tc = lcc.getTransactionExecute();
    String currentUserId = lcc.getCurrentUserId(activation);
    switch(privType) {
        case Authorizer.MODIFY_SCHEMA_PRIV:
        case Authorizer.DROP_SCHEMA_PRIV:
            SchemaDescriptor sd = dd.getSchemaDescriptor(schemaName, tc, false);
            // does not exists.
            if (sd == null)
                return;
            if (!currentUserId.equals(sd.getAuthorizationId()))
                throw StandardException.newException(SQLState.AUTH_NO_ACCESS_NOT_OWNER, currentUserId, schemaName);
            break;
        case Authorizer.CREATE_SCHEMA_PRIV:
            // called at all
            if (!schemaName.equals(currentUserId) || (aid != null && !aid.equals(currentUserId)))
                throw StandardException.newException(SQLState.AUTH_NOT_DATABASE_OWNER, currentUserId, schemaName);
            break;
        default:
            if (SanityManager.DEBUG) {
                SanityManager.THROWASSERT("Unexpected value (" + privType + ") for privType");
            }
            break;
    }
}

Example 74 with SchemaDescriptor

use of org.apache.derby.iapi.sql.dictionary.SchemaDescriptor in project derby by apache.

the class DMLModStatementNode method getSchemaDescriptor.

/**
 * Get a schema descriptor for the given table.
 * Uses this.targetTableName.
 *
 * @return Schema Descriptor
 *
 * @exception	StandardException	throws on schema name
 *						that doesn't exist
 */
SchemaDescriptor getSchemaDescriptor() throws StandardException {
    SchemaDescriptor sd;
    sd = getSchemaDescriptor(targetTableName.getSchemaName());
    return sd;
}

Example 75 with SchemaDescriptor

use of org.apache.derby.iapi.sql.dictionary.SchemaDescriptor in project derby by apache.

the class DropAliasNode method bindStatement.

/**
 * Bind this DropMethodAliasNode.
 *
 * @exception StandardException		Thrown on error
 */
@Override
public void bindStatement() throws StandardException {
    DataDictionary dataDictionary = getDataDictionary();
    String aliasName = getRelativeName();
    AliasDescriptor ad = null;
    SchemaDescriptor sd = getSchemaDescriptor();
    if (sd.getUUID() != null) {
        ad = dataDictionary.getAliasDescriptor(sd.getUUID().toString(), aliasName, nameSpace);
    }
    if (ad == null) {
        throw StandardException.newException(SQLState.LANG_OBJECT_DOES_NOT_EXIST, statementToString(), aliasName);
    }
    // User cannot drop a system alias
    if (ad.getSystemAlias()) {
        throw StandardException.newException(SQLState.LANG_CANNOT_DROP_SYSTEM_ALIASES, aliasName);
    }
    // Statement is dependent on the AliasDescriptor
    getCompilerContext().createDependency(ad);
}