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package net.sf.basedb.reggie.pdf; |
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import java.text.NumberFormat; |
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import net.sf.basedb.core.Annotatable; |
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import net.sf.basedb.core.DbControl; |
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import net.sf.basedb.reggie.converter.ValueConverter; |
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import net.sf.basedb.reggie.dao.Annotationtype; |
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import net.sf.basedb.reggie.dao.ReggieItem; |
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import net.sf.basedb.util.formatter.Formatter; |
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/** |
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Implements formatting of numeric values with optional |
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conversion of value and unit. This is basically a |
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ValueConverter implementation with some extra utility |
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methods for getting annotation values from items. |
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@since 4.28 |
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*/ |
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public class NumericFormatter |
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implements ValueConverter<Number, String>, Formatter<Number> |
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{ |
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private final ValueConverter<? super Number, ? extends Number> converter; |
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private final NumberFormat formatter; |
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private final String suffix; |
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private final String nullValue; |
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/** |
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Create a formatter using the given converter and numeric formatter. No suffix and null |
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values are returned as empty strings. |
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@param converter Converter for the values before they are formatted (optional) |
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@param formatter Formatter to use for the final value |
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*/ |
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public NumericFormatter(ValueConverter<? super Number, ? extends Number> converter, NumberFormat formatter) |
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{ |
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this(converter, formatter, "", ""); |
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} |
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/** |
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Create a formatter using the given converter and numeric formatter. Null values |
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are converted to the specified string and the suffix is added for non-null values. |
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|
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@param converter Converter for the values before they are formatted (optional) |
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@param formatter Formatter to use for the final value |
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*/ |
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public NumericFormatter(ValueConverter<? super Number, ? extends Number> converter, NumberFormat formatter, String suffix, String nullValue) |
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{ |
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this.converter = converter; |
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this.formatter = formatter; |
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this.suffix = suffix; |
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this.nullValue = nullValue; |
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} |
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/** |
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Get the specified annotation value from the item and return the formatted string. |
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*/ |
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public String format(DbControl dc, Annotationtype at, ReggieItem<?> item) |
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{ |
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return convert((Number)at.getAnnotationValue(dc, item.getItem())); |
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} |
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/** |
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Get the specified annotation value from the item and return the formatted string. |
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*/ |
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public String format(DbControl dc, Annotationtype at, Annotatable item) |
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{ |
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return convert((Number)at.getAnnotationValue(dc, item)); |
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} |
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/** |
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Same as convert(value) |
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*/ |
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@Override |
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public String format(Number value) |
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{ |
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return convert(value); |
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} |
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@Override |
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public String convert(Number value) |
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{ |
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if (converter != null && value != null) value = converter.convert(value); |
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return value == null ? nullValue : (formatter.format(value) + suffix); |
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} |
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@Override |
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public Number parseString(String s) |
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{ |
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throw new UnsupportedOperationException("parseString"); |
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} |
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|
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} |