Package org.eclipse.persistence.internal.expressions

Examples of org.eclipse.persistence.internal.expressions.ConstantExpression

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   */
  public void visit(StringLiteral expression) {

    // Create the expression
    queryExpression = queryContext.getBaseExpression();
    queryExpression = new ConstantExpression(expression.getUnquotedText(), queryExpression);

    // Set the expression type
    type[0] = String.class;
  }
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        ClassDescriptor descriptor = queryContext.getDescriptor(expression.getText());

        // Entity type name
        if (descriptor != null) {
          type[0] = descriptor.getJavaClass();
          queryExpression = new ConstantExpression(type[0], queryContext.getBaseExpression());
          found = true;
        }
      }

      if (!found) {
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        ClassDescriptor descriptor = queryContext.getDescriptor(expression.getText());

        // Entity type name
        if (descriptor != null) {
          type[0] = descriptor.getJavaClass();
          queryExpression = new ConstantExpression(type[0], queryContext.getBaseExpression());
          found = true;
        }
      }

      if (!found) {
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       */
      @Override
      public void visit(IdentificationVariable expression) {
        ClassDescriptor descriptor = queryContext.getDescriptor(expression.getVariableName());
        queryExpression = queryContext.getBaseExpression();
        queryExpression = new ConstantExpression(descriptor.getJavaClass(), queryExpression);
      }
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        // Retrieve the enum constant
        String path = expression.getPath(expression.pathSize() - 1);
        Enum<?> enumConstant = retrieveEnumConstant(enumType, path);

        // Create the Expression
        localExpression = new ConstantExpression(enumConstant, new ExpressionBuilder());

        return true;
      }

      return false;
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     * @param y
     *            expression
     * @return sum
     */
    public <N extends Number> Expression<N> sum(N x, Expression<? extends N> y){
        return new FunctionExpressionImpl(this.metamodel, (Class<N>)BasicTypeHelperImpl.getInstance().extendedBinaryNumericPromotion(x.getClass(), y.getJavaType()), ExpressionMath.add(new ConstantExpression(x, ((InternalSelection)y).getCurrentNode()),((InternalSelection)y).getCurrentNode()), buildList(literal(x),y), "sum");
    }
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     * @param y
     *            expression
     * @return product
     */
    public <N extends Number> Expression<N> prod(N x, Expression<? extends N> y){
        return new FunctionExpressionImpl(this.metamodel, (Class<N>)BasicTypeHelperImpl.getInstance().extendedBinaryNumericPromotion(x.getClass(), y.getJavaType()), ExpressionMath.multiply(new ConstantExpression(x, ((InternalSelection)y).getCurrentNode()),((InternalSelection)y).getCurrentNode()), buildList(literal(x),y), "prod");
    }
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     * @param y
     *            expression
     * @return quotient
     */
    public Expression<Number> quot(Number x, Expression<? extends Number> y){
        return new FunctionExpressionImpl(this.metamodel, ClassConstants.NUMBER, ExpressionMath.divide(new ConstantExpression(x, ((InternalSelection)y).getCurrentNode()),((InternalSelection)y).getCurrentNode()), buildList(literal(x),y), "quot");
    }
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     *
     * @param value
     * @return expression literal
     */
    public <T> Expression<T> literal(T value){
        return new ExpressionImpl<T>(metamodel, (Class<T>) (value == null? null: value.getClass()), new ConstantExpression(value, new ExpressionBuilder()), value);
    }
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     *
     * @param resultClass  type of the null literal
     * @return null expression literal
     */
    public <T> Expression<T> nullLiteral(Class<T> resultClass){
        return new ExpressionImpl<T>(metamodel, resultClass, new ConstantExpression(null, new ExpressionBuilder()), null);
    }
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Related Classes of org.eclipse.persistence.internal.expressions.ConstantExpression

  • org.eclipse.persistence.internal.jpa.jpql.ExpressionBuilderVisitor
  • org.eclipse.persistence.internal.jpa.jpql.ExpressionBuilderVisitor$ComparisonExpressionVisitor
  • org.eclipse.persistence.internal.jpa.jpql.ExpressionBuilderVisitor$InExpressionBuilder
  • org.eclipse.persistence.internal.jpa.jpql.ExpressionBuilderVisitor$InExpressionBuilder$InItemExpressionVisitor
  • org.eclipse.persistence.internal.jpa.jpql.ExpressionBuilderVisitor$InExpressionExpressionBuilder
  • org.eclipse.persistence.internal.jpa.jpql.ExpressionBuilderVisitor$PathResolver
  • org.eclipse.persistence.internal.jpa.parsing.ExistsNode
  • org.eclipse.persistence.internal.jpa.parsing.UnaryMinus
  • org.eclipse.persistence.internal.jpa.parsing.VariableNode
  • org.eclipse.persistence.internal.jpa.querydef.CommonAbstractCriteriaImpl
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