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<?xml version="1.0" encoding="ISO-8859-1"?>
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- Copyright (C) 1998-2018 OpenLink Software
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- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
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- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
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- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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-->
<refentry id="fn_java_get_property">
<refmeta>
<refentrytitle>java_get_property</refentrytitle>
<refmiscinfo>jvmpl</refmiscinfo>
</refmeta>
<refnamediv>
<refname>java_get_property</refname>
<refpurpose>Gets a property value from a Java class instance.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_java_get_property">
<funcprototype id="fproto_java_get_property">
<funcdef><function>java_get_property</function></funcdef>
<paramdef>in <parameter>class_name</parameter> varchar</paramdef>
<paramdef>in <parameter>instance_obj</parameter> varchar</paramdef>
<paramdef>in <parameter>field_name</parameter> varchar</paramdef>
<paramdef>in <parameter>field_ret_type_sig</parameter> varchar</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_java_get_property">
<title>Description</title>
<para>Gets a property value from a Java class instance referenced by
instance_obj. If instance_obj is not supplied, ie NULL, then it
is returned as a static Java class property value.</para>
</refsect1>
<refsect1 id="params_java_get_property">
<title>Parameters</title>
<refsect2><title>class_name</title>
<para>the name of the java class to get the property from</para>
</refsect2>
<refsect2><title>instance_obj</title>
<para>the Java VM class instance reference value (for example returned by java_new_object VSEI). Can be NULL.</para>
</refsect2>
<refsect2><title>field_name</title>
<para>the name of the field in the java class</para>
</refsect2>
<refsect2><title>field_ret_type_sig</title>
<para>the JNI type signature of the field.</para>
</refsect2>
</refsect1>
<!--
<refsect1 id="ret_java_get_property"><title>Return Types</title>
<para></para>
</refsect1>
-->
<refsect1 id="examples_java_get_property">
<title>Examples</title>
<example id="ex_java_get_property1"><title>static value - Java's PI value returned as DOUBLE PRECISION</title>
<screen><![CDATA[
java_get_property ('java.lang.Math', NULL, 'PI', 'D');
]]></screen>
</example>
<example id="ex_java_get_property2"><title>default time zone name in tz_name</title>
<screen><![CDATA[
tz := java_call_method ('java.util.TimeZone', NULL, 'getDefault', 'Ljava/util/TimeZone;');
tz_name := java_get_property ('java.util.TimeZone', tz, 'getDisplayName', 'Ljava/lang/String;');
]]></screen>
</example>
</refsect1>
<refsect1 id="seealso_java_get_property">
<title>See Also</title>
<para><link linkend="fn_java_call_method"><function>java_call_method()</function></link></para>
<para><link linkend="fn_java_set_property"><function>java_set_property()</function></link></para>
<para><link linkend="fn_java_vm_attach"><function>java_vm_attach()</function></link></para>
<para><link linkend="fn_java_load_class"><function>java_load_class()</function></link></para>
<para><link linkend="fn_java_new_object"><function>java_new_object()</function></link></para>
<para><link linkend="fn_java_vm_detach"><function>java_vm_detach()</function></link></para>
</refsect1>
</refentry>
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