[#456] Add runtime support for PRECISION, SCALE, and LENGTH attributes -
Added the precision/scale/length API
This commit is contained in:
Lukas Eder
parent
e9a2308105
commit
3d63aa82a0
@ -181,6 +181,79 @@ public interface DataType<T> extends Serializable {
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*/
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List<T> convert(Collection<?> objects);
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/**
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* Return a new data type like this, with a new precision value
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* <p>
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* This will have no effect if {@link #hasPrecision()} is <code>false</code>
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*
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* @param precision The new precision value
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* @return The new data type
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*/
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DataType<T> precision(int precision);
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/**
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* Get the precision of this data type
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*
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* @return The precision of this data type
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*/
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int precision();
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/**
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* Whether this data type has a precision
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*
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* @return Whether this data type has a precision
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*/
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boolean hasPrecision();
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/**
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* Return a new data type like this, with a new scale value
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* <p>
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* This will have no effect if {@link #hasScale()} is <code>false</code>
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*
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* @param scale The new scale value
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* @return The new data type
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*/
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DataType<T> scale(int scale);
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/**
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* Get the scale of this data type
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*
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* @return The scale of this data type
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*/
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int scale();
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/**
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* Whether this data type has a scale
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*
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* @return Whether this data type has a scale
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*/
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boolean hasScale();
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/**
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* Return a new data type like this, with a new length value
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* <p>
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* This will have no effect if {@link #hasLength()} is <code>false</code>
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*
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* @param length The new length value
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* @return The new data type
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*/
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DataType<T> length(int length);
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/**
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* Get the length of this data type
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*
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* @return The length of this data type
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*/
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int length();
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/**
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* Whether this data type has a length
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*
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* @return Whether this data type has a length
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*/
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boolean hasLength();
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/**
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* Whether this data type is any numeric data type.
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* <p>
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@ -189,22 +189,22 @@ public class DefaultDataType<T> implements DataType<T> {
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}
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public DefaultDataType(SQLDialect dialect, DataType<T> sqlDataType, String typeName) {
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this(dialect, sqlDataType, sqlDataType.getType(), typeName, typeName);
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this(dialect, sqlDataType, sqlDataType.getType(), typeName, typeName, 0, 0, 0);
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}
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public DefaultDataType(SQLDialect dialect, DataType<T> sqlDataType, String typeName, String castTypeName) {
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this(dialect, sqlDataType, sqlDataType.getType(), typeName, castTypeName);
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this(dialect, sqlDataType, sqlDataType.getType(), typeName, castTypeName, 0, 0, 0);
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}
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public DefaultDataType(SQLDialect dialect, Class<T> type, String typeName) {
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this(dialect, null, type, typeName, typeName);
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this(dialect, null, type, typeName, typeName, 0, 0, 0);
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}
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public DefaultDataType(SQLDialect dialect, Class<T> type, String typeName, String castTypeName) {
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this(dialect, null, type, typeName, castTypeName);
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this(dialect, null, type, typeName, castTypeName, 0, 0, 0);
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}
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private DefaultDataType(SQLDialect dialect, DataType<T> sqlDataType, Class<T> type, String typeName, String castTypeName) {
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private DefaultDataType(SQLDialect dialect, DataType<T> sqlDataType, Class<T> type, String typeName, String castTypeName, int precision, int scale, int length) {
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this.dialect = dialect;
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// [#858] SQLDataTypes should reference themselves for more convenience
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@ -214,9 +214,9 @@ public class DefaultDataType<T> implements DataType<T> {
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this.castTypeName = castTypeName;
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this.arrayType = (Class<T[]>) Array.newInstance(type, 0).getClass();
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this.precision = 0;
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this.scale = 0;
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this.length = 0;
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this.precision = precision;
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this.scale = scale;
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this.length = length;
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init();
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}
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@ -247,6 +247,74 @@ public class DefaultDataType<T> implements DataType<T> {
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}
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}
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@Override
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public final DataType<T> precision(int p) {
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if (hasPrecision()) {
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return new DefaultDataType<T>(dialect, sqlDataType, type, typeName, castTypeName, p, scale, length);
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}
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return this;
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}
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@Override
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public final int precision() {
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return precision;
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}
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@Override
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public final boolean hasPrecision() {
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return sqlDataType == SQLDataType.DECIMAL
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|| sqlDataType == SQLDataType.DECIMAL_INTEGER
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|| sqlDataType == SQLDataType.NUMERIC;
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}
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@Override
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public final DataType<T> scale(int s) {
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if (hasScale()) {
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return new DefaultDataType<T>(dialect, sqlDataType, type, typeName, castTypeName, precision, s, length);
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}
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return this;
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}
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@Override
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public final int scale() {
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return scale;
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}
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@Override
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public final boolean hasScale() {
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return hasPrecision();
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}
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@Override
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public final DataType<T> length(int l) {
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if (hasLength()) {
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return new DefaultDataType<T>(dialect, sqlDataType, type, typeName, castTypeName, precision, scale, l);
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}
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return this;
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}
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@Override
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public final int length() {
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return length;
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}
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@Override
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public final boolean hasLength() {
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return sqlDataType == SQLDataType.BINARY
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|| sqlDataType == SQLDataType.BIT
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|| sqlDataType == SQLDataType.CHAR
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|| sqlDataType == SQLDataType.LONGNVARCHAR
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|| sqlDataType == SQLDataType.LONGVARBINARY
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|| sqlDataType == SQLDataType.LONGVARCHAR
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|| sqlDataType == SQLDataType.NCHAR
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|| sqlDataType == SQLDataType.NVARCHAR
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|| sqlDataType == SQLDataType.VARBINARY
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|| sqlDataType == SQLDataType.VARCHAR;
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}
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@Override
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public final DataType<T> getSQLDataType() {
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return sqlDataType;
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@ -437,12 +505,12 @@ public class DefaultDataType<T> implements DataType<T> {
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@Override
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public final <A extends ArrayRecord<T>> DataType<A> asArrayDataType(Class<A> arrayDataType) {
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return new DefaultDataType<A>(dialect, null, arrayDataType, typeName, castTypeName);
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return new DefaultDataType<A>(dialect, arrayDataType, typeName, castTypeName);
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}
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@Override
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public final <E extends EnumType> DataType<E> asEnumDataType(Class<E> enumDataType) {
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return new DefaultDataType<E>(dialect, null, enumDataType, typeName, castTypeName);
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return new DefaultDataType<E>(dialect, enumDataType, typeName, castTypeName);
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}
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@Override
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@ -481,11 +549,11 @@ public class DefaultDataType<T> implements DataType<T> {
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}
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public static DataType<Object> getDefaultDataType(String typeName) {
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return new DefaultDataType<Object>(SQLDialect.SQL99, null, Object.class, typeName, typeName);
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return new DefaultDataType<Object>(SQLDialect.SQL99, Object.class, typeName, typeName);
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}
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public static DataType<Object> getDefaultDataType(SQLDialect dialect, String typeName) {
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return new DefaultDataType<Object>(dialect, null, Object.class, typeName, typeName);
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return new DefaultDataType<Object>(dialect, Object.class, typeName, typeName);
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}
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public static DataType<?> getDataType(SQLDialect dialect, String typeName) {
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