thinkui.datagen.generators
Class DynamicDataGenerator

java.lang.Object
  thinkui.datagen.AbstractAttributeValueGenerator
      thinkui.datagen.generators.DynamicDataGenerator

All Implemented Interfaces:

AttributeValueGenerator, java.lang.Cloneable

Direct Known Subclasses:

ForeignKeyIdGenerator, LastNameGenerator

public class DynamicDataGenerator

extends AbstractAttributeValueGenerator

Implements an AttributeValueGenerator for generating values based on the data from a column from database table. The values will be distributed based on the specified probability model on the data row index. Alternatively, if a custom distribution is specified in the data itself, then that distribution model will be used.

The IndexedValueDataGenerator class will be delegated to perform the actual data generation.

Note: if mutiple values are retrieve, a data object will be generated. The appropriate attribute value should be access in this case.

Field Summary

Fields inherited from interface thinkui.datagen.AttributeValueGenerator

ALL_MODES, BERNOULLI_MODE, BINOMIAL_MODE, CONSTANT_MODE, DEFAULT_MODE, EXPONENTIAL_MODE, MILLIS_PER_DAY, MILLIS_PER_HOUR, MILLIS_PER_MINUTE, MILLIS_PER_SECOND, NORMAL_MODE, POISON_MODE, SEQUENTIAL_MODE, UNIFORM_MODE

Constructor Summary

DynamicDataGenerator()
DynamicDataGenerator constructor.

DynamicDataGenerator(DataClass dataClass, java.lang.String attributeName)
DynamicDataGenerator constructor.

Method Summary

java.lang.Object	generateValue() Generate a value for the attribute.
DataClass	getDataClass()
thinkui.db.jdbc.JDBCDataObjectManager	getDataObjectManager()
int	getGeneratorMode()
java.lang.String	getIndexAttributeName()
int	getMaxObjectCount()
AttributeType	getMinMaxAttributeType() Override to return AttributeType.INTEGER.
java.lang.String	getOrderByAttributeName()
int	getProbabilityNull()
thinkui.db.criteria.SearchCriteria	getSearchCriteria()
java.lang.String	getSQLQuery()
java.lang.String	getValueAttributeName() Returns the attribute name in the case where we are generating data objects.
void	initGenerator() Resolves all SQL variables and clear any cache data values.
void	setDataClass(DataClass dataClass) Sets the data class.
void	setDataObjectManager(thinkui.db.jdbc.JDBCDataObjectManager dataObjectManager) Sets the data object manager to use to lookup the data objects.
void	setGeneratorMode(int generatorMode) Sets the generation mode for the generator.
void	setIndexAttributeName(java.lang.String indexAttributeName) Sets the attribute name containing the distribution index.
void	setMaxObjectCount(int maxObjectCount) Sets the maximum object count or use -1 to indicate no limit.
void	setOrderByAttributeName(java.lang.String orderByAttributeName) Sets the attribute name to order the data objects by.
void	setProbabilityNull(int probabilityNull) Sets the probability that the generated value is null.
void	setSearchCriteria(thinkui.db.criteria.SearchCriteria searchCriteria) Sets the search criteria.
void	setSQLQuery(java.lang.String sqlQuery) Sets the SQL query to execute to lookup data values.
void	setValueAttributeName(java.lang.String valueAttributeName) Sets the attribute name containing the distribution index.

Methods inherited from class thinkui.datagen.AbstractAttributeValueGenerator

copy, createGenerator, getAttribute, getConstantValue, getCount, getCountAsInt, getDataObject, getDataObjectMap, getMaxValue, getMeanIndex, getMeanIndexAsDouble, getMeanLength, getMeanLengthAsDouble, getMeanValue, getMeanValueAsDouble, getMinValue, getParameterData, getParentDataObject, getProbability, getProbabilityAsDouble, getStdDevValue, getStdDevValueAsDouble, isDataDependent, isMultiValued, isParentDataDependent, setAttribute, setConstantValue, setCount, setDataDependent, setDataObject, setDataObjectMap, setMaxValue, setMeanIndex, setMeanLength, setMeanValue, setMinValue, setMultiValued, setParentDataDependent, setParentDataObject, setProbability, setStdDevValue

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DynamicDataGenerator

public DynamicDataGenerator()

DynamicDataGenerator constructor.

DynamicDataGenerator

public DynamicDataGenerator(DataClass dataClass,
                            java.lang.String attributeName)

DynamicDataGenerator constructor.

Method Detail

generateValue

public java.lang.Object generateValue()
                               throws java.lang.Exception

Generate a value for the attribute.

Specified by:

generateValue in interface AttributeValueGenerator

Specified by:

generateValue in class AbstractAttributeValueGenerator

Throws:

java.lang.Exception

getDataClass

public final DataClass getDataClass()

Returns:

the data class or null.

getDataObjectManager

public final thinkui.db.jdbc.JDBCDataObjectManager getDataObjectManager()

Returns:

the data object manager to use to lookup the data objects.

getGeneratorMode

public final int getGeneratorMode()

Specified by:

getGeneratorMode in interface AttributeValueGenerator

Overrides:

getGeneratorMode in class AbstractAttributeValueGenerator

Returns:

the generation mode for the generator.

getIndexAttributeName

public final java.lang.String getIndexAttributeName()

Returns:

the attribute name containing the distribution index or null.

getMaxObjectCount

public final int getMaxObjectCount()

Returns:

the maximum object count or -1 (for no limit).

getMinMaxAttributeType

public final AttributeType getMinMaxAttributeType()

Override to return AttributeType.INTEGER.

Specified by:

getMinMaxAttributeType in interface AttributeValueGenerator

Overrides:

getMinMaxAttributeType in class AbstractAttributeValueGenerator

getOrderByAttributeName

public final java.lang.String getOrderByAttributeName()

Returns:

the attribute name to order the data objects by.

getProbabilityNull

public final int getProbabilityNull()

Specified by:

getProbabilityNull in interface AttributeValueGenerator

Overrides:

getProbabilityNull in class AbstractAttributeValueGenerator

Returns:

the probability that the generated value is null.

getSearchCriteria

public final thinkui.db.criteria.SearchCriteria getSearchCriteria()

Returns:

the search criteria or null.

getSQLQuery

public final java.lang.String getSQLQuery()

Returns:

the SQL query to execute to lookup data values or null.

getValueAttributeName

public final java.lang.String getValueAttributeName()

Description copied from class: AbstractAttributeValueGenerator

Returns the attribute name in the case where we are generating data objects. The current method simply returns null. Derived classes must override this method if isMultiValued() can return true.

Specified by:

getValueAttributeName in interface AttributeValueGenerator

Overrides:

getValueAttributeName in class AbstractAttributeValueGenerator

Returns:

the attribute name containing the value or null.

initGenerator

public final void initGenerator()
                         throws java.lang.Exception

Resolves all SQL variables and clear any cache data values.

Specified by:

initGenerator in interface AttributeValueGenerator

Overrides:

initGenerator in class AbstractAttributeValueGenerator

Throws:

java.lang.Exception

setDataClass

public final void setDataClass(DataClass dataClass)

Sets the data class.

setDataObjectManager

public final void setDataObjectManager(thinkui.db.jdbc.JDBCDataObjectManager dataObjectManager)

Sets the data object manager to use to lookup the data objects.

setGeneratorMode

public final void setGeneratorMode(int generatorMode)

Sets the generation mode for the generator.

Specified by:

setGeneratorMode in interface AttributeValueGenerator

Overrides:

setGeneratorMode in class AbstractAttributeValueGenerator

setIndexAttributeName

public final void setIndexAttributeName(java.lang.String indexAttributeName)

Sets the attribute name containing the distribution index.

setMaxObjectCount

public final void setMaxObjectCount(int maxObjectCount)

Sets the maximum object count or use -1 to indicate no limit. It is important to set a limit if there are a large number of records source data set since all the data will be loaded into memory.

setOrderByAttributeName

public final void setOrderByAttributeName(java.lang.String orderByAttributeName)

Sets the attribute name to order the data objects by.

setProbabilityNull

public final void setProbabilityNull(int probabilityNull)

Sets the probability that the generated value is null.

Specified by:

setProbabilityNull in interface AttributeValueGenerator

Overrides:

setProbabilityNull in class AbstractAttributeValueGenerator

setSearchCriteria

public final void setSearchCriteria(thinkui.db.criteria.SearchCriteria searchCriteria)

Sets the search criteria.

setSQLQuery

public final void setSQLQuery(java.lang.String sqlQuery)

Sets the SQL query to execute to lookup data values.

setValueAttributeName

public final void setValueAttributeName(java.lang.String valueAttributeName)

Sets the attribute name containing the distribution index.