Examples of ch.agent.crnickl.api.UpdatableSchema

ch.agent.crnickl.api.UpdatableSchema
An UpdatableSchema is a schema which can be modified. A schema can only be modified if it is not in use or if the modification has no consequence on existing use. For example a series can always be added but can only be deleted if no chronicle using the schema has actually created the series.
Updatable schemas are not only used in client applications like schema editors but also by CrNiCKL internally. Any schema can be defined as an extension to another schema. Schemas are kept in permanent storage without resolving these extensions. Before a schema is made available for use, CrNiCKL resolves the extensions. Extensions are visible to clients only in edit mode.
A hypothetical example will help to illustrate how schemas are constructed. The example uses 3 schemas: a, b, and c. Schema a defines two series, s1 and s2, and one attribute, a1. Schema b extends schema a; it removes series s2, and adds series s3. Schema c extends schema b; it adds attribute a2 and redefines attribute a1 (for example with a different default value). Given this design, a chronicle with effective schema c, will have two series, s1 and s3, and two attributes, a1 and a2. It will not be aware of the existence of schemas a and b. @author Jean-Paul Vetterli @version 1.1.0

    }
  }
  
  public void test_create_schema_ok_but_not_applied() {
    try {
      UpdatableSchema schema = db.createSchema("schema1", null);
      schema.addSeries(1);
      schema.setSeriesName(1, "x25");
      schema.addAttribute(1);
      schema.setAttributeProperty(1, db.getProperty("prop1", true));
      schema.setAttributeDefault(1, "t1v1");
      assertEquals("t1v1", schema.getAttributeDefinition(1, true).getValue().toString());
      assertEquals("t1v1", schema.getAttributeDefinition("prop1", true).getValue().toString());
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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      fail(e.getMessage());
    }
  }
  public void test_create_schema_failure_illegal_value_on_property_modification() {
    try {
      UpdatableSchema schema = db.createSchema("schema1", null);
      schema.addAttribute(1);
      schema.setAttributeProperty(1, db.getProperty("prop1", true));
      schema.setAttributeDefault(1, "t1v1");
      // next one makes default value illegal
      schema.setAttributeProperty(1, db.getProperty("prop2", true));
      schema.applyUpdates();
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30133);
    }
  }

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  }


  public void test_create_schema_failure_incomplete_attribute() {
    try {
      // adding an incomplete, non-erasing attribute should fail
      UpdatableSchema schema = db.createSchema("schema1", null);
      schema.addAttribute(1);
      schema.applyUpdates();
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30105, D.D30111);
    }
  }

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  }
  
  public void test_create_schema_failure_incomplete_attribute_no_value() {
    try {
      // attribute restricted, without "empty" value in the list
      UpdatableSchema schema = db.createSchema("schema1", null);
      schema.addAttribute(1);
      schema.setAttributeProperty(1, db.getProperty("prop1", true));
      schema.applyUpdates();
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30105, D.D30111);
    }
  }

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  }
  
  public void test_create_schema_with_empty_value() {
    try {
      // attribute restricted, with "empty" value in the list
      UpdatableSchema schema = db.createSchema("schema2a", null);
      schema.addAttribute(1);
      Property<?> prop = db.getProperty("prop2", true);
      schema.setAttributeProperty(1, prop);
      schema.setAttributeDefault(1, prop.scan(""));
      schema.applyUpdates();
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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  public void test_create_schema_with_null_value() {
    try {
      // attribute restricted, with "empty" value in the list
      // null string is not okay, use empty string
      UpdatableSchema schema = db.createSchema("schema2b", null);
      schema.addAttribute(1);
      schema.setAttributeProperty(1, db.getProperty("prop2", true));
      schema.applyUpdates();
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30105, D.D30111);
    }
  }

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  }


  public void test_create_schema_failure_incomplete_series() {
    try {
      // adding an incomplete, non-erasing series should fail
      UpdatableSchema schema = db.createSchema("schema1", null);
      schema.addSeries(1);
      schema.applyUpdates();
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30105, D.D30112);
    }
  }

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    }
  }
  
  public void test_create_schema_schema1f() {
    try {
      UpdatableSchema schema = db.createSchema("schema1f", null);
      schema.addSeries(1);
      schema.setSeriesName(1, "x");
      schema.setSeriesType(1, "numeric");
      schema.setSeriesTimeDomain(1, Day.DOMAIN);
      schema.applyUpdates();
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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  }
  
  public void test_create_existing_schema_fails() {
    try {
      // adding an incomplete, non-erasing series attribute should fail
      UpdatableSchema schema = db.createSchema("schema1f", null);
      schema.applyUpdates();
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30108);
    }
  }

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  }
  
  public void test_add_incomplete_series_attribute() {
    try {
      // adding an incomplete, non-erasing series attribute should fail
      UpdatableSchema schema = db.getUpdatableSchemas("schema1f").iterator().next();
      schema.addAttribute(1, 4);
      schema.applyUpdates();
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30105, D.D30113);
    }
  }

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ch.agent.crnickl.impl.SchemaUpdatePolicyImpl

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ch.agent.crnickl.jdbc.ReadMethodsForSchema

ch.agent.crnickl.jdbc.WriteMethodsForSchema

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ch.agent.crnickl.junit.T040_SeriesTest

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