Examples of net.hydromatic.optiq.Function

net.hydromatic.optiq.Function
Named expression that accepts parameters and returns a result.
The application may occur at compile time (for a macro) or at run time (for a regular function). The result may be a relation, and so might any of the parameters.

Functions are registered in a {@link Schema}, and may be queried by name ( {@link Schema#getFunctions(String)}) then overloads resolved based on parameter types.
@see TableMacro @see ScalarFunction


  public static final RexImpTable INSTANCE = new RexImpTable();


  public CallImplementor get(final SqlOperator operator) {
    if (operator instanceof SqlUserDefinedFunction) {
      Function udf =
        ((SqlUserDefinedFunction) operator).getFunction();
      if (!(udf instanceof ImplementableFunction)) {
        throw new IllegalStateException(
            "User defined function " + operator + " must implement "
            + "ImplementableFunction");

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  public static final RexImpTable INSTANCE = new RexImpTable();


  public CallImplementor get(final SqlOperator operator) {
    if (operator instanceof SqlUserDefinedFunction) {
      Function udf =
        ((SqlUserDefinedFunction) operator).getFunction();
      if (!(udf instanceof ImplementableFunction)) {
        throw new IllegalStateException(
            "User defined function " + operator + " must implement "
            + "ImplementableFunction");

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  public static final RexImpTable INSTANCE = new RexImpTable();


  public CallImplementor get(final SqlOperator operator) {
    if (operator instanceof SqlUserDefinedFunction) {
      Function udf =
        ((SqlUserDefinedFunction) operator).getFunction();
      if (!(udf instanceof ImplementableFunction)) {
        throw new IllegalStateException(
            "User defined function " + operator + " must implement "
            + "ImplementableFunction");

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Related Classes of net.hydromatic.optiq.Function

net.hydromatic.optiq.rules.java.RexImpTable

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